LEGRAND MIDDLE ATLANTIC FORWARD Series User manual

100-00012 Rev C
THANK YOU
PRODUCT FEATURES
• Drop in and secure into Lever Lock™ compatible rackrail brackets.
• Mounting flexibility front to back along multiple rackrail bracket styles.
• Includes all hardware needed for any Middle Atlantic rackrail bracket style.
Thank you for purchasing a Forward Series Vertical Mounting option by Middle Atlantic. Please
read these instructions thoroughly before installing or assembling this product.
Forward Series
Vertical Mounting Options
Instruction Sheet
22
PAP

Page 2
IMPORTANT SAFETY INSTRUCTIONS - EN
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Clean only with dry cloth.
• Only use attachments/accessories specified by the manufacturer.
Important Safety Instructions...............................................................................................................2 - 3
Supplied Components and Hardware..................................................................................................4 - 5
Required Tools..........................................................................................................................................5
Introduction...............................................................................................................................................5
Universal Vertical Power Bracket (UVPB) Installations
Installing the Universal Vertical Power Bracket Into Lever Lock™ Compatible Rackrail Brackets...........6
Installing the Universal Vertical Power Bracket Into Rackrail Brackets....................................................7
Vertical Lacer Bar Installations (UMV) Installation
Installing the Vertical Lacer Bar Into Lever Lock Compatible Rackrail Brackets......................................8
Installing the Vertical Lacer Bar Into Rackrail Brackets ...........................................................................9
Installing the Vertical Lacer Bar Into Unistrut Channels.........................................................................10
Vertical Plastic Cable Duct Installations
Installing the Vertical Plastic Cable Duct Into Lever Lock Compatible Rackrail Brackets.......................11
Installing the Vertical Plastic Cable Duct Into Rackrail Brackets ............................................................12
Installing Hinge Clip and Cover ..............................................................................................................13
Wire Mesh Lacer Bar (WB3) Installations
Installing the Wire Mesh Lacer Bar Into Lever Lock Compatible Rackrail Brackets...............................14
Installing the Wire Mesh Lacer Bar Into Rackrail Brackets ....................................................................15
Installing the Wire Mesh Lacer Bar Into Unistrut Channels....................................................................16
Warranty..................................................................................................................................................17
TABLE OF CONTENTS
DANGER HAZARDOUS VOLTAGE: The lightning
flash with the arrowhead symbol, within an equilateral
triangle is intended to alert the user to the presence of
uninsulated dangerous voltage within the product’s
enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
WARNING: A warning
alerts you to a situation that
could result in serious
personal injury or death.
CAUTION: A caution alerts you to a
situation that may result in minor personal
injury or damage to the product and/or
property.
NOTE: A note is used to highlight procedures pertaining to the installation, operation, or
maintenance of the product.
WARNING: Failure to read, understand and follow the following information can result in serious personal injury, damage to the
equipment or voiding of the warranty. It is the responsibility of the Installer/User to ensure that this product is loaded according to
specifications.
WARNING: Middle Atlantic, electrical systems conform to and should be properly grounded in compliance with requirements of the
current National Electrical Code or codes administered by local authorities. All electrical products may present a possible shock or fire
hazard if improperly installed or used. Electrical products may bear the mark of a Nationally Recognized Testing Laboratory (NRTL)
and should be installed in conformance with current local and/or the National Electrical Code.
CAUTION: Note that during construction, there must be no possibility of personal injury, for example the squeezing of fingers or
arms.
CAUTION: If there is visible damage on the product, it must not be installed.
CAUTION: Safety measures must be practiced at all times during the assembly of this product. Use proper safety equipment and
tools for the assembly procedure to prevent personal injury.

Page 3
INSTRUCCIONES DE SEGURIDAD IMPORTANTES - ES
PELIGRO PELIGROSO VOLTAJE: El relámpago
con el símbolo de la punta de flecha, dentro de un
triángulo equilátero está destinado a alertar al
usuario de la presencia de tensión peligrosa no
aislada dentro del recinto del producto que puede
ser de magnitud suficiente para constituir un
riesgo de descarga eléctrica para las personas.
ADVERTENCIA: Una advertencia
le avisa de una situación que
podría resultar en lesiones
personales graves o la muerte.
PRECAUCIÓN: Una precaución le avisa
de una situación que puede resultar en
lesiones personales menores o daños al
producto y/o propiedad.
NOTA: Se utiliza una nota para resaltar los procedimientos relacionados con la instalación,
operación o mantenimiento del producto.
• Lea estas instrucciones.
• Guarda estas instrucciones.
• Preste atención a todas las advertencias.
• Siga todas las instrucciones
• Limpie solamente con un paño seco.
• Utilice únicamente accesorios especificados por el fabricane.
PRECAUCIÓN: Si hay daños visibles en el producto, no debe ser instalado.
PRECAUCIÓN: Se deben implementar medidas de seguridad en todo momento durante el montaje de este producto. Utilizar
equipos y herramientas de seguridad adecuados para los procedimientos de para evitar lesiones.
PRECAUCIÓN: Tenga en cuenta que durante la construcción no debe haber riesgo de lesiones, como por ejemplo aplastar los
dedos o los brazos.
ADVERTENCIA: No leer, entender y seguir la siguiente información puede resultar en lesiones personales graves, daños al
equipo o anulación de la garantía. Es responsabilidad del instalador/usuario asegurarse de que este producto se carga según las
especificaciones.
ADVERTENCIA: Middle Atlantic, los sistemas eléctricos se ajustan a y deben estar correctamente conectados a tierra en
cumplimiento con los requisitos del actual Código Eléctrico Nacional o códigos administrados por las autoridades locales. Todos
los productos eléctricos pueden presentar un posible riesgo de choque o incendio si se instalan o utilizan incorrectamente. Los
productos eléctricos pueden llevar la marca de un Laboratorio de Pruebas Reconocido a Nivel Nacional (NRTL) y deben instalarse
de conformidad con la corriente local y/ o el Código Eléctrico Nacional.
INSTRUCTIONS IMPORTANTES SUR LA SÉCURITÉ - FR
ATTENTION: S'il ya des dommages visibles sur le produit, il ne doit pas être installé.
ATTENTION: Des mesures de sécurité doivent être mises en œuvre en tout temps lors de l'assemblage de ce produit. Utiliser un
équipement et des outils de sécurité appropriés pour la procédures de afin d'éviter les blessures.
ATTENTION: Notez que pendant la construction, il ne doit pas y avoir de risque de blessure, comme par exemple le écraser des
doigts ou des bras.
AVERTISSEMENT:Refus de lire, comprendre et suivre la renseignements suivants peut traduire par de graves blessures, des
dommages à l'équipement ou invalider la garantie. Il est la responsabilité de l'installateur / utilisateur de s'assurer que ce produit
est chargé conformément aux spécifications.
AVERTISSEMENT: Les produits Middle Atlantic, les systèmes électriques sont conformes et doivent être correctement mis à la
terre conformément aux exigences du Code national de l'électricité en vigueur ou aux codes administrés par les autorités locales.
Tous les produits électriques peuvent présenter un risque d'électrocution ou d'incendie s'ils sont mal installés ou utilisés. Les
produits électriques peuvent porter la marque d'un laboratoire d'essais reconnu au niveau national (NRTL) et doivent être installés
conformément au code électrique local et/ou national en vigueur.
AVERTISSEMENT: Un
avertissement vous avertit d'une
situation pouvant entraîner des
blessures graves ou la mort.
• Lire ces instructions.
• Conservez ces instructions.
• Respectez tous les avertissements.
• Suivez toutes les instructions.
• Nettoyer uniquement avec un chiffon sec.
• N'utilisez que des accessoires spécifiés par le fabricant.
DANGER TENSION DANGEREUSE: Le symbole
de la pointe de flèche, dans un triangle équilatéral,
est destiné à alerter l'utilisateur sur la présence de
tension dangereuse non isolée dans l'enceinte du
produit qui peut être d'une ampleur suffisante pour
constituer un risque d'électrocution.
ATTENTION: Une attention vous avertit
d'une situation pouvant entraîner des
blessures mineures ou des dommages au
produit et/ou à la propriété.
REMARQUE: Une remarque est utilisée pour mettre en évidence les procédures relatives à
l'installation, au fonctionnement ou à l'entretien du produit.

Page 4
Vertical Lacer Bar
D
VERTICAL LACER BAR WITH UNIVERSAL HOLE PATTERN
(MODEL NO. FWD-LACE-UMV-XX-XX)
Universal Vertical Power Bracket
A
UNIVERSAL VERTICAL POWER BRACKET
(MODEL NO. FWD-UVPB-XX-XX)
NOTE: This instuction sheet covers similar lacer bar options. Each option is sold separately; therefore,
components are provided based on the specific items you purchased.
SUPPLIED COMPONENTS AND HARDWARE
(4x)
Rackrail Nut
(For Rackrail Bracket Installation)
C
(4x)
Rackrail Nut
(For Rackrail Bracket Installation)
G
(4x)
10-32 x 1”
Panhead Phillips Screw
(For Rackrail Bracket
Installation)
F
(2x)
8-32 x ¾”
Flathead Phillips Screw
(For Lever Lock Compatible
Rackrail Bracket Installation)
E
(3x)
Spring Nut
(For Unistrut Channel Installation)
J
(3x)
Offset Bracket
(For Unistrut Channel Installation)
K
(4x)
¼-20 x 1”
Flathead Phillips Screw
(For Lever Lock™ Compatible Rackrail Bracket and Rackrail Bracket Installation)
B
(3x)
10-32 x 1¾”
Panhead Phillips Screw
(For Unistrut Channel Installation)
H
VERTICAL PLASTIC CABLE DUCT
(MODEL NO. FWD-VPCD-XX-44-45)
(4x)
Rackrail Nut
(For Rackrail Bracket Installation)
R
(4x)
10-32 x 1”
Panhead Phillips Screw
(For Rackrail Bracket Installation)
P
(2x)
8-32 x ¾”
Flathead Phillips Screw
(For Lever Lock Compatible
Rackrail Bracket Installation)
N
(6x)
Hinges
M
Vertical Plastic Cable
Duct
L

REQUIRED TOOLS
Page 5
• #2 Phillips Screwdriver
• 7/16” Wrench
• 3/8” Wrench
WARNING: Use tools with caution and follow all necessary safety
protocols.
AVERTISSEMENT: Utiliser des outils avec prudence et suivre
tous les protocoles de sécurité nécessaires.
SUPPLIED COMPONENTS AND HARDWARE (CONTINUED)
NOTE: Depending on your enclosure, the specific Vertical Mounting option you purchased may be
installed on a Lever Lock™ compatible rackrail bracket, a rackrail bracket, or a unistrut channel.
The following sections cover specific installation topics available for each product.
INTRODUCTION
Wire Mesh Lacer Bar
S
WIRE MESH LACER BAR
(MODEL NO. FWD-LACE-WB3-XX-XX)
(11x)
Rackrail Nut
(For Rackrail Bracket Installation)
W
(11x)
¼-20 x 5/8”
Hex Head Bolt
(For Rackrail Bracket or Unistrut
Channel Installation)
U
(4x)
Thead Cutting Screw
(For Lever Lock Compatible
Rackrail Bracket Installation)
T
(3x)
Offset Bracket
(For Unistrut Channel Installation)
Z
(3x)
Tray Mounting Bracket
(For Rackrail Bracket or
Unistrut Channel Installation)
V
(3x)
Spring Nut
(For Unistrut Channel Installation)
Y
(6x)
¼-20 x 1½”
Hex Head Bolt
(For Unistrut Channel Installation)
X

Page 6
INSTALLING UVPB INTO LEVER LOCK™ COMPATIBLE RACKRAIL BRACKETS
Universal Vertical Power Bracket (UVPB) Installations
FIGURE A
FIGURE DFIGURE C
1. Insert the hooks on your universal vertical
power bracket (A) into the slots on the Lever
Lock compatible rackrail brackets on one side
of your enclosure’s interior as shown.
(FIGURE B)
NOTE:
• BGR installation shown. The procedure is typical for
other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
Isolated Lever Lock compatible
rackrail bracket with slots and fixed
holes left black for clarity.
(FIGURE A)
BGR
Installation
Shown
B
FIGURE B
A
C
Secure power
bracket hooks into
slots on rackrail
brackets.
NOTE: View from
inside of enclosure.
2. Drop a rackrail nut (C) into the slot between the ones
used for the hooks on your universal vertical power
bracket (A). (FIGURE C)
3. Use a Phillips screwdriver and (2x) ¼-20 x 1" flathead
Phillips screws (B) through mounting holes on the power
bracket, fixed holes on the rackrail bracket and into the
rackrail nut (C) to secure it properly. (FIGURE D)
TIP: Work from the top rackrail bracket down.
NOTE: View
from outside of
enclosure.
NOTE:
View from
outside of
enclosure.

Page 7
FIGURE E
Isolated rackrail bracket with slot
openings left black for clarity.
(FIGURE E)
NOTE:
• ERK installation shown. The procedure is typical for
other compatible enclosures.
• Exact mounting position may vary based on your specific
power and cabling installation.
• Ensure any hooks on the back of your power bracket (A) remain clear
of your rackrail brackets for a flush fit.
1. Put a ¼-20 x 1" flathead Phillips screw (B) through the top
mounting hole location on your power bracket (A) and thread
INSTALLING UVPB INTO RACKRAIL BRACKETS
ERK
Installation
Shown
the screw (approximately 2 - 3 full turns) into a rackrail nut (C) as shown. (FIGURE F)
2. Insert the rackrail nut (partially assembled to the power bracket via the Phillips screw from the previous
step) through a nearby slot opening in your desired location along the top rackrail bracket on one side
of your enclosure’s interior. (FIGURE G)
3. Repeat the previous steps to match the hardware amounts (Phillips screws and rackrail nuts) to the
amount of rackrail brackets in your enclosure.
TIP: Work from the top rackrail bracket down.
4. Use a #2 Phillips screwdriver to tighten all screws.
FIGURE F
A
CB
FIGURE G
Insert rackrail nut
through slot opening.
NOTE: View from
inside of enclosure.
Slot opening along
rackrail bracket.
NOTE: Side
view of
universal power
bracket.

Page 8
INSTALLING UMV INTO LEVER LOCK COMPATIBLE RACKRAIL BRACKETS
FIGURE H
1. Insert the hooks on your vertical lacer bar
(D) into the slots on the Lever Lock compatible
rackrail brackets on one side of your
enclosure’s interior as shown. (FIGURE J)
NOTE: In 35 RU DWR and 40 RU SR enclosures, attach
only 2 hooks (top and bottom, the middle hook is not used)
to the rackrail brackets.
NOTE:
• BGR installation shown. The procedure is typical for
other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
2. Use a Phillips screwdriver and (2x) 8-32 x ¾" flathead Phillips screws (E) through mounting holes on
the vertical lacer bar and into the fixed holes on the rackrail bracket to secure it properly. (FIGURE K)
Vertical Lacer Bar With Universal Hole Pattern (UMV) Installations
Isolated Lever Lock compatible
rackrail bracket with slots and
fixed holes left black for clarity.
(FIGURE H)
FIGURE J FIGURE K
D
NOTE: View from
outside of enclosure.
E
NOTE: View from
inside of enclosure.
BGR
Installation
Shown
Secure vertical lacer
bar hooks into slots
on rackrail brackets.

Page 9
FIGURE L
Isolated rackrail bracket with slot
openings left black for clarity.
(FIGURE L)
NOTE:
• ERK installation shown. The procedure is typical
for other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
• Ensure any hooks on the back of your vertical lacer bar (D)
remain clear of your rackrail brackets for a flush fit.
1. Line up your vertical lacer bar (D) against the rackrail bracket
slot openings inside of your enclosure to determine which obround
INSTALLING UMV INTO RACKRAIL BRACKETS
holes on the vertical lacer bar will be used for your hardware (10-32 x 1" panhead Phillips screws and
rackrail nuts).
2. Put a 10-32 x 1" panhead Phillips screw (F) through the top obround hole location (determined from
the previous step) on your lacer bar (D) and thread the screw (approximately 2 - 3 full turns) into a
rackrail nut (G) as shown. (FIGURE M)
3. Insert the rackrail nut (partially assembled to the lacer bar via the Phillips screw from the previous step)
through a nearby slot opening in your desired location along the top rackrail bracket on one side of
your enclosure’s interior. (FIGURE N)
NOTE: Hand-tighten the screw at ths point to allow for adjustments.
4. Repeat the previous steps to match the hardware amounts (Phillips screws and rackrail nuts) to the
amount of rackrail brackets in your enclosure.
TIP: Work from the top rackrail bracket down.
5. Use a #2 Phillips screwdriver to tighten all screws.
NOTE: View from
inside of enclosure.
FIGURE N
Slot opening along
rackrail bracket.
ERK
Installation
Shown
FIGURE M
D
GF
Insert rackrail nut
through slot opening.
NOTE: Side view of
vertical lacer bar.

Page 10
4. Use a #2 Phillips screwdriver to
tighten all screws.
FIGURE R
INSTALLING UMV INTO UNISTRUT CHANNELS
2. Use a 10-32 x 1¾" panhead Phillips screw (H) through an obround hole in the top location on your
vertical lacer bar (D), through an offset bracket (K), and into the spring nut (J).
NOTE: Hand-tighten the screw at ths point to allow for adjustments.
3. Repeat the previous steps to match the hardware amounts (panhead Phillips screws, offset brackets,
and spring nuts) to the amount of unistrut channels in your enclosure.
NOTE:
• Only SNE enclosures have unistrut channels.
• Exact mounting position may vary based on
your specific power and cabling installation.
• Ensure any hooks on the back of your vertical
lacer bar (D) remain clear of your rackrail
brackets for a flush fit.
1. Slide a spring nut (J) into the top unistrut
channel on one side of your enclosure’s
interior as shown. (FIGURE R)
FIGURE P
Isolated SNE unistrut channel for
clarity. (FIGURE P)
H
K
J
NOTE:
View from
inside of
enclosure.
TIP: Work from the top unistrut channel down.
D
SNE
Installation
Shown

Page 11
INSTALLING THE VPCD INTO LEVER LOCK COMPATIBLE RACKRAIL BRACKETS
Vertical Plastic Cable Duct (VPCD) Installations
FIGURE S
1. Insert the hooks on your vertical plastic
cable duct (L) into the slots on the Lever Lock
compatible rackrail brackets on one side of
your enclosure’s interior as shown. (FIGURE T)
NOTE:
• BGR installation shown. The procedure is typical for
other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
• Fixed holes and slots pre-drilled on VPCD for
compatability with all rack series installations.
2. Use a Phillips screwdriver and (2x) 8-32 x ¾" flathead Phillips screws (N) through mounting holes
on the vertical plastic cable duct and into the fixed holes on the rackrail bracket to secure it properly.
(FIGURE U)
Isolated Lever Lock compatible
rackrail bracket with slots and
fixed holes outlined in black for
clarity. (FIGURE S)
FIGURE T FIGURE U
L
Secure vertical lacer
bar hooks into slots
on rackrail brackets.
NOTE: View from
outside of enclosure.
NOTE: If you are installing hinge clips to your VPCD, see “Installing Hinge Clips and Cover” on page 13.
BGR
Installation
Shown
N
NOTE: View
from inside of
enclosure.

Page 12
FIGURE V
Isolated rackrail bracket with slot
openings outlined in black for
clarity. (FIGURE V)
NOTE:
• MRK installation shown. The procedure is typical
for VRK and WRK series.
• Exact mounting position may vary based on your
specific power and cabling installation.
• Ensure any hooks on the back of your vertical plastic cable
duct (L) remain clear of your rackrail brackets for a flush fit.
• Fixed holes and slots pre-drilled on VPCD for
compatability with all rack series installations mentioned.
INSTALLING VPCD INTO RACKRAIL BRACKETS
1. Line up your vertical plastic cable duct (L) against the rackrail bracket slot openings inside of your
enclosure to determine which obround holes on the vertical lacer bar will be used for your hardware
(10-32 x 1" panhead Phillips screws and rackrail nuts).
2. Put a 10-32 x 1" panhead Phillips screw (P) through the top obround hole location (determined from
the previous step) on your vertical plastic cable duct (L) and thread the screw (approximately 2 - 3 full
turns) into a rackrail nut (R) as shown. (FIGURE W)
3. Insert the rackrail nut (partially assembled to the vertical plastic cable duct via the Phillips screw from
the previous step) through a nearby slot opening in your desired location along the top rackrail bracket
on one side of your enclosure’s interior. (FIGURE X)
4. Repeat the previous steps to match the hardware amounts (Phillips screws and rackrail nuts) to the
amount of rackrail brackets in your enclosure.
5. Use a #2 Phillips screwdriver to tighten all screws.
MRK
Installation
Shown
FIGURE W
R
P
NOTE: View from
inside of enclosure.
Slot opening along
rackrail bracket.
FIGURE X
Insert rackrail nut
through slot opening.
TIP: Work from the top
rackrail bracket down.
NOTE:
• Hand-tighten the screw at this point to allow for adjustments.
• If you are installing hinge clips to your VPCD, see “Installing Hinge Clips and Cover” on page 13.
P
R

Page 13
FIGURE AB
INSTALLING HINGE CLIP AND COVER (FOR VPCD ONLY)
M
M
2. Align hinge clip in-between two fingers, after the clips
are attached to the cover. (FIGURE AA)
NOTE: Hinge clips snap into one finger at a time.
3. Attach the cover to the plastic duct
as shown. (FIGURE AB)
FIGURE Y
FIGURE Z
FIGURE AA
NOTE:
• Hinge Clips are compatible with vertical plastic cable ducts only.
• Hinge Clips connect the cover to the duct, allowing the cover to swing open and close for optimum
cable management.
TIP: Equally space (3x) hinge clips on each cover piece, while keeping outer hinge clips away from
the edges as shown. (FIGURE Z)
1. Slide the ‘hook portion’ of the hinge clip onto the edge of the cover as shown. (FIGURE Y)
Flat Portion
Hook Portion
Cover
M
Finger
NOTE: Top view of cover shown.
M

Page 14
2. Use a Phillips screwdriver and (2x) thread cutting screws (T) to secure the wire mesh lacer bar (S) to
the rackrail bracket. (FIGURE AE)
NOTE: Only (2x) thread cutting screws need to be used on the top bracket of the wire mesh lacer bar to
secure it in place.
TIP: Work from the top rackrail bracket down.
INSTALLING WB3 INTO LEVER LOCK COMPATIBLE RACKRAIL BRACKETS
FIGURE AC
1. Insert the hooks on your wire mesh lacer bar (S) into the
slots on the Lever Lock compatible rackrail brackets on one
side of your enclosure’s interior as shown. (FIGURE AD)
NOTE: In 35 RU DWR and 40 RU SR enclosures, attach only
2 hook pairs (top and bottom pairs, the middle hook pair is not
used) to the rackrail brackets.
NOTE:
• BGR installation shown. Installation is typical for
other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
Wire Mesh Lacer Bar (WB3) Installations
Isolated Lever Lock compatible
rackrail bracket with slots and
fixed holes left black for clarity.
(FIGURE AC)
FIGURE AD FIGURE AE
S
NOTE: View
from outside
of enclosure. T
Secure wire mesh
lacer bar hooks into
slots on rackrail
brackets.
NOTE: View from
inside of enclosure.
BGR
Installation
Shown

Page 15
FIGURE AF
NOTE:
• ERK installation shown. Installation is typical for
other compatible enclosures.
• Exact mounting position may vary based on your
specific power and cabling installation.
• Ensure any hooks on the back of your wire mesh
lacer bar (S) remain clear of your rackrail brackets
for a flush fit.
INSTALLING WB3 INTO RACKRAIL BRACKETS
ERK
Installation
Shown
1. Line up your wire mesh lacer bar (S) against the rackrail bracket slot openings inside of your enclosure
to determine which locations on the lacer bar will be used for your hardware (¼-20 x 5/8" hex head
bolts, tray mounting brackets, and rackrail nuts).
2. Put a ¼-20 x 5/8" hex head bolt (U) through a tray mounting bracket (V) held against the desired
top mounting location (determined from the previous step) on your lacer bar (S) and thread the bolt
(approximately 2 - 3 full turns) into a rackrail nut (W) as shown. (FIGURE AG)
3. Insert the rackrail nut (partially assembled to the lacer bar via the tray mounting bracket and hex head
bolt from the previous step) through a nearby slot opening in your desired location along the top
rackrail bracket on one side of your enclosure’s interior. (FIGURE AH)
NOTE: Hand-tighten the bolt at ths point to allow for adjustments.
4. Repeat the previous steps to match the hardware amounts (hex head bolts, tray mounting brackets,
and rackrail nuts) to the amount of rackrail brackets in your enclosure.
TIP: Work from the top rackrail bracket down.
5. Use a 7/16” wrench to tighten all bolts.
NOTE: Side
view of wire
mesh lacer bar.
FIGURE AG
S
W
V
U
Isolated rackrail bracket with slot
openings left black for clarity.
(FIGURE AF)
FIGURE AH
Insert rackrail nut
through slot opening.
NOTE: View from
inside of enclosure.
Slot opening along
rackrail bracket.

Page 16
FIGURE AK
INSTALLING WB3 INTO UNISTRUT CHANNELS
2. Hold an offset bracket (Z) over the location of the spring nut (Y) along the unistrut channel.
3. Use a ¼-20 x 1½" hex head bolt (X) through a tray mounting bracket (V) held against the desired top
mounting location on your lacer bar (S) while putting it through the offset bracket (Z) and into the spring
nut (Y).
NOTE: Hand-tighten the bolt at ths point to allow for adjustments.
4. Repeat the previous steps to match the hardware amounts (hex head bolts, tray mounting brackets,
offset brackets, and spring nuts) to the amount of unistrut channels in your enclosure.
NOTE:
• Only SNE enclosures have unistrut channels.
• Exact mounting position may vary based on
your specific power and cabling installation.
• Ensure any hooks on the back of your wire
mesh lacer bar (S) remain clear of your
rackrail brackets for a flush fit.
1. Slide a spring nut (Y) into the top unistrut
channel on one side of your enclosure’s
interior as shown. (FIGURE AK)
FIGURE AJ
X
V
Z
Y
5. Use a 3/8” wrench to tighten all
bolts.
Isolated SNE unistrut channel
shown for clarity. (FIGURE AJ)
TIP: Work from the top unistrut channel down.
S
SNE
Installation
Shown
NOTE: View from
inside of enclosure.

Page 17
WARRANTY
At Legrand AV Inc. we are always listening. Your comments are welcome.
Legrand AV is an ISO 9001 and ISO 14001 Registered Company.
European Union (EU)
Legrand AV Netherlands
B.V. Franklinstraat 14 6003
DK, Weert, Netherlands
United States (US)
Legrand | AV Headquarters
6436 City West Parkway
Eden Prairie, MN, 55344, USA
United Kingdom (UK)
Starline Holding Technology Ltd.
(Authorized Representative)
Unit C, Island Rd.
Reading RG2, 0RP- UK
For warranty information, refer to www.legrandav.com/policies/warranty_information.
Contacting Corporate Headquarters
P: [phone] | F: [phone] | www.legrandav.com | [email protected]
Contacting Middle Atlantic Canada
P: [phone] | F: [phone] | ca.middleatlantic.com | [email protected]
Contacting Middle Atlantic Europe, Middle East, and Africa (EMEA) Technical Support
P: [phone] | [email protected]