Type
Catalog Number
FEATURES
• Ideal for corridor lighting and library stacks.
• Use with companion general illumination fixture. "Double-throw"
distribution illuminates vertical surfaces, improving brightness ratios and eliminating "cave effect."
• Companion symmetric and asymmetric fixtures match louver appearance.
• Efficiently delivers appropriate horizontal and vertical illumination level.
• Ideal for unit or row mounting.
• Choice of diffuse or specular louvers utilize the latest developments in louver finishing for minimized louver iridescence. Ideal
for use with triphosphor lamps.
• Black reveal provides floating louver appearance, conceals
optional air-supply slots.
• Overlapping flange and modular ceiling trims factory installed
with standard swing-gate hangers or field convertible with
optional trim and hanger kits.
• Optional air-pattern control blades allow airflow control.
• Guaranteed for one year against mechanical defects in manufacture.
Catalog number
Type
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Optimax® Parabolic Light Control System
PMO 9"x4'
Bi-asymmetric Distribution
1 or 2 Lamps
SPECIFICATIONS
BALLAST — Thermally protected, resetting, Class P, HPF, nonPCB, UL listed, CSA certified ballast is standard. Energy-saving
and electronic ballasts are sound rated A. Standard combinations are CBM approved and conform to UL 935.
WIRING & ELECTRICAL — Fixture conforms to UL 1570 and is suitable for damp locations. AWM, TFN or THHN wire used throughout, rated for required temperatures.
MATERIALS — Housing formed from cold-rolled steel. Louvers
formed from anodized aluminum. No asbestos is used in this product.
FINISH — Five-stage iron-phosphate pretreatment ensures superior paint adhesion and rust resistance. Painted parts finished
with high-gloss, baked white enamel.
LISTING — UL listed and labeled. Listed and labeled to comply with
Canadian and Mexican Standards (see options).
Bi-asymmetric
Distribution
Specifications subject to change without notice.
PHOTOMETRICS
Photometry derived in accordance with IESNA LM41 procedure. Vertical illuminance is calculated with fixture mounted 3' from wall, 4' on centers,
at 10' ceiling height. Room reflectances are 80-50-20%. Full photometric data available upon request.
9PMO 2 32 10LS BIAS
Report LTL 6442
Initial Point Illuminance on Corridor Wall and Floor Surface (fc)
vert.
Luminaire
Spacing
4’
5’ 6’
7’ 8’ 9’ 10’ 11’ 12’ 13’ 14’ 15’ 16’ 17’ 18’ 19’ 20’
Mounting
Height
8.5’
7.5’
6.5’
5.5’
4.5’
3.5’
2.5’
1.5’
.5’
.5
1.5
2.5
18
36
40
36
34
31
27
24
22
43
48
50
20
39
44
41
39
35
31
28
25
49
54
56
20
40
45
42
41
38
34
30
27
54
60
63
3.5
4.5
5.5
50 56 60 63 65 68 69 70 70 70 69 68 66 62 59 56 52
48 54 57 60 62 65 66 67 67 67 66 65 63 60 57 54 50
43 49 52 54 56 59 60 60 61 60 60 59 57 54 51 48 45
20
39
45
42
40
37
33
29
26
52
57
60
20
40
45
42
42
39
34
31
28
56
62
65
21
41
46
44
43
41
36
33
29
59
65
68
21
40
46
44
43
41
36
33
30
60
66
69
21
41
46
44
43
41
37
33
30
60
67
70
21
41
47
44
43
41
37
33
30
61
67
70
21
41
46
44
43
41
36
33
30
60
67
70
21
40
46
44
43
41
36
33
30
60
66
69
21
41
46
44
43
40
36
32
29
59
65
68
21
41
46
44
43
40
36
32
29
57
63
66
20
39
45
42
41
38
33
30
27
54
60
62
20
39
44
42
40
37
32
29
26
51
57
59
20
39
44
40
38
35
31
28
25
48
54
56
20
38
42
38
36
33
29
26
24
45
50
52
horiz.
COMMERCIAL & INDUSTRIAL FLUORESCENT LIGHTING
Luminance Summary - cd/m2
Angle Along
45
55
65
75
85
6478
1184
90
0
0
45
Across
5841
3518
2537
1152
146
5545
6338
5345
3898
364
Wall Floor
Avg. = 35 fc 59 fc
Max. = 46 fc 70 fc
Min. = 18 fc 43 fc
PMO 9x4 BD
PMO 9"x4' Bi-asymmetric Distribution, Optimax
MOUNTING DATA
DIMENSIONS
Continuous row mounting of flanged units requires CRE
and CRM trim options (see Options).
Inches (millimeters). Subject to change without notice.
NOTES:
1 Recommended rough-in dimensions for F
trim fixtures 9" x 48" (tolerance is +1/4", 0"). Swing-gate range 1" to
3-1/4", span 8-1/2" to 11-5/16".
2 GF1 trim option provides flange trim on one
side only.
Example: 9PMO G B 1 32 10LD BIAS 120 GEB
ORDERING INFORMATION
9PMO
Series
Air function
Lamp type
9PMO Optimax
Light
Control
System,
9" wide
A Air supply/
return (slots in
side trim)
B Static (no air
function,
matching
appearance)
32 32W T8 (48")
40 40W T12 (48")
Trim type
Voltage
1, 2 1
120, 277, 347,
MVOLT2
Others available.
Number
of cells
10 1 row of 10
NOTES:
1 Two-lamp versions available in T8 only.
2 MVOLT available with GEB10IS only.
PMO 9x4 BD
© 1995 Lithonia Lighting, Rev. 7/00
PMO9x4B.p65
BIAS Bi-asymmetric
distribution
Number
of lamps
Not included.
G Grid
F Overlapping
flanged
MT Modular fit-in
ST Screw slot
GF Grid trim ends,
flanged sides to
support ceiling tile
GF1 Grid trim ends and
one grid side, one
flange side to
support ceiling tile
Light
distribution
Louver finish
LD Low iridescent
diffuse silver
LS Low iridescent
specular silver
Options
1/2
GEB
GEB10IS
GEB10RS
EL
One 2-lamp ballast
Electronic ballast, <20% THD
Electronic ballast, <10% THD, Instant Start
Electronic ballast, <10% THD, Rapid Start
Emergency battery pack (nominal 300
lumens; see Life Safety Section)
GLR Internal fast-blow fuse
GMF Internal slow-blow fuse
PWS1836 6' prewire, 3/8" dia., 18-gauge, 3 wires
TW_ Tandem-wired channels sharing ballast
LP__ Lamped, specify lamp type and color
APB Air-pattern control blades (A models only)
CRE Flanged trim for continuous row mounting
(end)
CRM Flanged trim for continuous row mounting
(middle)
SMB Side-mounted ballast; reduces fixture
height
PAF Painted after fabrication (white enamel)
LATC T-bar safety clips (screw-on)
CSA Listed and labeled to comply with Canadian
Standards
NOM Listed and labeled to comply with Mexican
Standards
COMMERCIAL & INDUSTRIAL FLUORESCENT LIGHTING
P.O. BOX A, CONYERS, GEORGIA 30012, TELEPHONE 770-922-9000, FAX 770-860-3106
IN CANADA: 1100 50TH AVE., LACHINE, QUEBEC H8T 2V3