For Factory Technical Information: (97 ) 657-7600 • Fax (97 ) 65 -0595
631 Airport Road, Fall River, MA 02720 • (50 ) 679- 131 • Fax (50 ) 674-4710
We reserve the right to change details of design, materials and finish.
www.lightolier.com © 2009 a Philips Group Section 1A/Folio E20-40 Rev. A
Job Information Type:
Lightolier is a Philips group brand
coefficients of utilization — zonal cavity method (effective floor cavity reflectance 0.20)
RF 20 20 20
RC 80 50 30
RW 70 50 30 50 30 10 50 30 10
1 85 82 79 77 75 73 74 72 70
2 78 72 67 68 64 61 66 62 60
3 72 64 58 61 56 52 59 55 51
4 66 57 51 54 49 45 53 48 44
5 61 51 45 49 43 39 47 43 39
6 56 47 40 44 39 35 43 38 34
7 52 42 36 41 35 31 39 34 31
8 49 39 32 37 32 28 36 31 28
9 46 36 29 34 29 25 33 28 25
10 43 33 27 32 26 23 31 26 23
visual comfort probability (rated lumens per lamp 3150.)
room size ceiling height ceiling height
WL8.5 10.0 13.0 16.0 8.5 10.0 13.0 16.0
20 20 66 70 77 84 65 68 74 81
20 30 60 64 69 75 60 63 66 72
20 40 56 59 64 69 58 60 63 66
20 60 53 56 59 64 56 58 60 62
30 20 68 72 76 82 67 70 74 80
30 30 61 64 68 73 62 64 66 71
30 40 57 60 63 67 59 61 62 65
30 60 53 56 58 62 57 58 59 61
30 80 52 54 55 59 56 58 57 59
40 20 70 73 77 82 69 72 75 80
40 30 63 66 69 73 64 66 67 71
40 40 58 61 63 67 60 62 63 65
40 60 54 56 58 61 58 59 59 61
40 80 52 54 54 58 57 58 57 59
40 100 52 53 53 55 57 58 56 57
60 30 64 67 70 74 65 67 69 72
60 40 60 62 64 67 61 63 64 66
60 60 55 57 58 61 59 60 59 61
60 80 53 54 54 57 57 58 57 59
60 100 53 53 52 55 57 58 56 57
100 40 63 65 66 69 64 66 66 68
100 60 59 60 60 63 61 62 61 63
100 80 56 57 56 59 60 60 59 60
100 100 55 55 54 56 59 59 57 58
Prismalyte Plus PRA2GRFVA232
Page 2 of 2 2' x 4' Recessed Fluorescent, Floating Lens Frame, Black Reveal
Static or Air Supply/Return, 2 Lamp, T or T5
Ordering Information
Explanation of Catalog Number. Example: PRA2GRFVA232UNVHI
Options/Accessories
Special Lenses: Substitute VY for VA (standard) = .125" nominal pattern 12 with 7.8 oz. average
weight per square foot. Substitute VI for VA (standard) = .125" nominal pattern 12 with 6.8 oz.
average weight per square foot.
Radio Interference Filter:
To order one RIF per fixture; SUFFIX: R. To order one RIF per ballast;
SUFFIX: B.
Air Closure Strip: SUFFIX ACS4 (factory installed).
Electrical Wiring Options: Consult factory.
Drywall Kit: Order Catalog Number: FK92X4.
(Request Folio OA30-10 Rev. A).
Chicago Plenum: SUFFIX: C.
Specifications
Performance: In an installation of 2 lamp 32W luminaires in a room cavity ratio of 1,
reflectance 80% ceiling, 50% wall, 20% floor, the C.U. shall not be less than .82. To prevent
glare the VCP shall be not less than 55 either lengthwise or crosswise (at 100fc level) and
the average brightness at 65° shall not exceed 1649 candelas per square meter. To control
veiling reflections, luminaire output in the 30°-90° zone shall not be less than 68.7%.
Air Handling: (PRA only) side air passages for air supply or air return. Supply air is dis-
charged vertically. Optional side closure strips. Air return is also provided through the lamp
compartment through fixture body ends.
Specifications (continued)
Materials:Chassis parts are die-formed code gauge cold rolled steel. Housing
with side rails hemmed over and hous-
ing ends turned-in for safe handling.
Finish:Chassis exterior–black baked polyester enamel. Cavity–white baked polyester enamel minimum 86%
reflectance. Phosphate undercoating.
Lenses:VA (standard) extruded virgin acrylic, 3/16" square based female cones, running 45° to the panel edge,
.095" nominal thickness (similar to pattern 12). VY (optional) .125" nominal pattern 12 with 7.8 oz. average
weight per square foot. VI (optional) .125" nominal pattern 12 with 6.8 oz. average weight per square foot.
Electrical: Thermally protected class “P” ballast C.B.M. approved, non PCB. If K.O. is within 3" of ballast, use
wire suitable for at least 90°.
Labels: I.B.E.W. UL and ULc Listed.
This product may have a mercury containing lamp.
Manage in accord with Disposal Laws. See: www.lamprecycle.org
Photometry Model No. PRA2GRFVA232120SO LER = FP - 61.2 IW - 63.1 BF - 0.87
Comparative yearly lighting energy cost per 1000 lumens = 3.92
THIS REPORT IS BASED ON PUBLISHED INDUSTRY PROCEDURES • FIELD PERFORMANCE MAY VARY FROM LABORATORY PERFORMANCE.
2
Fixture
Width
Ceiling Type:
G= Grid
(lay-in T bar)
T= Slot grid or
two-directional
concealed T
see options)
RF
Lens Frame:
RF=1/2" regressed
floating aluminum
frame with 7/16"
black reveal four
sides.
Lens Shielding
Type:
VA=Virgin acrylic
(standard), see
options and
consult factory
2
Lamp
Quantity
Lamp Type/
Fixture Length:
32=32W T
28=2 W T5
54=54W T5
(Nominal 4 ")
Options:
Add appropriate suffix to
catalog no., ie: (C)
Ballast Type:
<20THD <10THD
1-2 Lamp Elec. T SO * HI*
1-2 Lamp 2 W Elec. T5 –PI
1-2 Lamp 2 W Elec. T5 –PG
1-2 Lamp 54W Elec. T5 –PG
LOL T Dimming PS –
Other dimming options. Consult factory.
*Instant Start Standard
†Instant Start (120, 277 or UNV)
††Program Rapid Start (UNV only)
NOTE: For T8 UNV, you must use H
I
Ballast Code.
room cavity ratio
luminaries lengthwise
luminaries crosswise
Voltage:
120, 277 or
UNV=120-277
Prismalyte
Plus:
Floating
Lens Frame
Recessed
Fluorescent
Troffer
Body Style:
A=Air
Handling
S=Static
PR Standard Prismalyte Plus
PK For NYC Code – I.B.E.W. Manufactured
PX For NYC Code – Local 3 Manufactured
