For Opening Width For Opening Width |
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For Opening Height For Opening Height |
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Frame Material Frame Material |
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Overall Width Overall Width |
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Overall Height Overall Height |
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Blade Material Blade Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Heavy Duty Movable-Blade Wall Louvers






With a thick frame, these louvers are rugged and dependable.
Gravity-operated louvers stay open only when air flows, which prevents backdrafts.
For technical drawings and 3-D models, click on a part number.
For Opening | Overall | Mounting | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wd. | Ht. | Wd. | Ht. | Louver Panel Style | For Max. Air Velocity, fpm | Temp. Range, °F | Fasteners Included | Hole Dia. | Overall Dp. | Each | |
Aluminum Frame and Blades | |||||||||||
Surface Mount | |||||||||||
10" | 10" | 13" | 13" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
12" | 12" | 15" | 15" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 00000 |
14" | 14" | 17" | 17" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 00000 |
16" | 16" | 19" | 19" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 00000 |
18" | 18" | 21" | 21" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 00000 |
20" | 20" | 23" | 23" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
22" | 22" | 25" | 25" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
24" | 24" | 27" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
26" | 26" | 29" | 29" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
28" | 28" | 31" | 31" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
30" | 30" | 33" | 33" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
32" | 32" | 35" | 35" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
34" | 34" | 37" | 37" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
36" | 24" | 39" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
36" | 36" | 39" | 39" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
38" | 38" | 41" | 41" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
40" | 40" | 43" | 43" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
42" | 42" | 45" | 45" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
44" | 44" | 47" | 47" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
48" | 48" | 51" | 51" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
50" | 50" | 53" | 53" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
54" | 54" | 57" | 57" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
56" | 56" | 59" | 59" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
60" | 60" | 63" | 63" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
66" | 66" | 69" | 69" | Triple | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 0000000 | 000000 |
Recess Mount | |||||||||||
10" | 10" | 13" | 13" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 00000 |
12" | 12" | 15" | 15" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 00000 |
14" | 14" | 17" | 17" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 00000 |
16" | 16" | 19" | 19" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 00000 |
18" | 18" | 21" | 21" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 00000 |
20" | 20" | 23" | 23" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
22" | 22" | 25" | 25" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
24" | 24" | 27" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
26" | 26" | 29" | 29" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
28" | 28" | 31" | 31" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
30" | 30" | 33" | 33" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
32" | 32" | 35" | 35" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
34" | 34" | 37" | 37" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
36" | 24" | 39" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
36" | 36" | 39" | 39" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
38" | 38" | 41" | 41" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
40" | 40" | 43" | 43" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
42" | 42" | 45" | 45" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
44" | 44" | 47" | 47" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
48" | 48" | 51" | 51" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
50" | 50" | 53" | 53" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
54" | 54" | 57" | 57" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
56" | 56" | 59" | 59" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
60" | 60" | 63" | 63" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
66" | 66" | 69" | 69" | Triple | 2,500 | -10° to 200° | No | 1/4" | 1 7/8" | 00000000 | 000000 |
Flush Mount | |||||||||||
10" | 10" | 9 7/8" | 9 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 00000 |
12" | 12" | 11 7/8" | 11 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 00000 |
14" | 14" | 13 7/8" | 13 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 00000 |
16" | 16" | 15 7/8" | 15 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 00000 |
18" | 18" | 17 7/8" | 17 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 00000 |
20" | 20" | 19 7/8" | 19 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
22" | 22" | 21 7/8" | 21 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
24" | 24" | 23 7/8" | 23 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
26" | 26" | 25 7/8" | 25 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
28" | 28" | 27 7/8" | 27 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
30" | 30" | 29 7/8" | 29 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
32" | 32" | 31 7/8" | 31 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
34" | 34" | 33 7/8" | 33 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
36" | 24" | 35 7/8" | 23 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
36" | 36" | 35 7/8" | 35 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
38" | 38" | 37 7/8" | 37 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
40" | 40" | 39 7/8" | 39 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
42" | 42" | 41 7/8" | 41 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
44" | 44" | 43 7/8" | 43 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
48" | 48" | 47 7/8" | 47 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
50" | 50" | 49 7/8" | 49 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 7/8" | 0000000 | 000000 |
54" | 54" | 53 7/8" | 53 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 7/8" | 0000000 | 000000 |
56" | 56" | 55 7/8" | 55 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 7/8" | 0000000 | 000000 |
60" | 60" | 59 7/8" | 59 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 7/8" | 0000000 | 000000 |
66" | 66" | 65 7/8" | 65 7/8" | Triple | 2,500 | -10° to 200° | __ | __ | 1 7/8" | 0000000 | 000000 |
Galvanized Steel Frame and Aluminum Blades | |||||||||||
Surface Mount | |||||||||||
10" | 10" | 13" | 13" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
12" | 12" | 15" | 15" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
14" | 14" | 17" | 17" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
16" | 16" | 19" | 19" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
18" | 18" | 21" | 21" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
20" | 20" | 23" | 23" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
22" | 22" | 25" | 25" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
24" | 24" | 27" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
26" | 26" | 29" | 29" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
28" | 28" | 31" | 31" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
30" | 30" | 33" | 33" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
32" | 32" | 35" | 35" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
34" | 34" | 37" | 37" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
36" | 24" | 39" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
36" | 36" | 39" | 39" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
38" | 38" | 41" | 41" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
40" | 40" | 43" | 43" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
42" | 42" | 45" | 45" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
44" | 44" | 47" | 47" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
48" | 48" | 51" | 51" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
50" | 50" | 53" | 53" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
54" | 54" | 57" | 57" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
56" | 56" | 59" | 59" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
60" | 60" | 63" | 63" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
66" | 66" | 69" | 69" | Triple | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
Recess Mount | |||||||||||
10" | 10" | 13" | 13" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
12" | 12" | 15" | 15" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
14" | 14" | 17" | 17" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 00000000 | 000000 |
16" | 16" | 19" | 19" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
18" | 18" | 21" | 21" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
20" | 20" | 23" | 23" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
22" | 22" | 25" | 25" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
24" | 24" | 27" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
26" | 26" | 29" | 29" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
28" | 28" | 31" | 31" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
30" | 30" | 33" | 33" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
32" | 32" | 35" | 35" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
34" | 34" | 37" | 37" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 00000000 | 000000 |
36" | 24" | 39" | 27" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 00000000 | 000000 |
36" | 36" | 39" | 39" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
38" | 38" | 41" | 41" | Single | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
40" | 40" | 43" | 43" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
42" | 42" | 45" | 45" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
44" | 44" | 47" | 47" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
48" | 48" | 51" | 51" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
50" | 50" | 53" | 53" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
54" | 54" | 57" | 57" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
56" | 56" | 59" | 59" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
60" | 60" | 63" | 63" | Double | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 0000000 | 000000 |
66" | 66" | 69" | 69" | Triple | 2,500 | -10° to 200° | No | 1/4" | 1 1/2" | 000000 | 000000 |
Flush Mount | |||||||||||
10" | 10" | 9 7/8" | 9 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 000000 | 000000 |
12" | 12" | 11 7/8" | 11 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
14" | 14" | 13 7/8" | 13 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
16" | 16" | 15 7/8" | 15 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
18" | 18" | 17 7/8" | 17 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
20" | 20" | 19 7/8" | 19 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
22" | 22" | 21 7/8" | 21 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
24" | 24" | 23 7/8" | 23 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
26" | 26" | 25 7/8" | 25 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
28" | 28" | 27 7/8" | 27 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
30" | 30" | 29 7/8" | 29 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
32" | 32" | 31 7/8" | 31 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
34" | 34" | 33 7/8" | 33 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
36" | 24" | 35 7/8" | 23 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
36" | 36" | 35 7/8" | 35 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
38" | 38" | 37 7/8" | 37 7/8" | Single | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
40" | 40" | 39 7/8" | 39 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 000000 | 000000 |
42" | 42" | 41 7/8" | 41 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
44" | 44" | 43 7/8" | 43 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
48" | 48" | 47 7/8" | 47 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
50" | 50" | 49 7/8" | 49 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
54" | 54" | 53 7/8" | 53 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
56" | 56" | 55 7/8" | 55 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
60" | 60" | 59 7/8" | 59 7/8" | Double | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 0000000 | 000000 |
66" | 66" | 65 7/8" | 65 7/8" | Triple | 2,500 | -10° to 200° | __ | __ | 1 1/2" | 000000 | 000000 |
Movable-Blade Wall Louvers


These gravity-operated louvers remain open only when air flows, preventing backdrafts.
For technical drawings and 3-D models, click on a part number.
For Opening | Overall | Mounting | Galvanized Steel Frame and Aluminum Blades | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wd. | Ht. | Wd. | Ht. | Dp. | Louver Panel Style | For Max. Air Velocity, fpm | Temp. Range, °F | Fasteners Included | Hole Dia. | Each | |
Surface Mount | |||||||||||
10 1/2" | 10 1/2" | 13" | 13" | 2 1/2" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
12 1/2" | 12 1/2" | 15" | 15" | 2 1/2" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 00000 |
16 1/2" | 16 1/2" | 19" | 19" | 2 1/2" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 00000 |
18 1/2" | 18 1/2" | 21" | 21" | 2 1/2" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 00000 |
20 1/2" | 20 1/2" | 23" | 23" | 2 1/2" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 00000 |
24 1/2" | 24 1/2" | 27" | 27" | 3" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
30 1/2" | 30 1/2" | 33" | 33" | 3" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
36 1/2" | 36 1/2" | 39" | 39" | 3" | Single | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
42 1/2" | 42 1/2" | 45" | 45" | 3" | Double | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
48 1/2" | 48 1/2" | 51" | 51" | 3" | Double | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
54 1/2" | 54 1/2" | 57" | 57" | 3" | Double | 2,500 | -40° to 180° | No | 9/32" | 00000000 | 000000 |
Corrosion-Resistant Movable-Blade Wall Louvers




Use these louvers in harsh environments—they won't rust. They are gravity operated and remain open only when air flows, preventing backdrafts.
For technical drawings and 3-D models, click on a part number.
For Opening | Overall | Mounting | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wd. | Ht. | Wd. | Ht. | Dp. | Louver Panel Style | For Max. Air Velocity, fpm | Temp. Range, °F | Fasteners Included | Hole Dia. | Each | |
Surface Mount | |||||||||||
304 Stainless Steel Frame and Blades | |||||||||||
12" | 12" | 15" | 15" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 0000000 |
16" | 16" | 19" | 19" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
18" | 18" | 21" | 21" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
20" | 20" | 23" | 23" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
24" | 24" | 27" | 27" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
30" | 30" | 33" | 33" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
36" | 36" | 39" | 39" | 2 3/8" | Single | 2,500 | -20° to 200° | No | 1/4" | 0000000 | 000000 |
Flush Mount | |||||||||||
Plastic Frame and Blades | |||||||||||
12" | 12" | 11 7/8" | 11 7/8" | 1 3/4" | Single | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
16" | 16" | 15 7/8" | 15 7/8" | 1 3/4" | Single | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
18" | 18" | 17 7/8" | 17 7/8" | 1 3/4" | Single | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
24" | 24" | 23 7/8" | 23 7/8" | 1 3/4" | Double | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
30" | 30" | 29 7/8" | 29 7/8" | 1 3/4" | Double | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
36" | 36" | 35 7/8" | 35 7/8" | 1 3/4" | Double | 1,200 | 5° to 140° | No | __ | 00000000 | 000000 |
Roof Louvers




These louvers are gravity operated. The blades open when your roof-mounted exhaust fan goes on and close when it's off, preventing backdrafts. The felt seal on the face of the blades ensures quiet closing and better protection from the weather.
Mounting bases are sold separately. Louvers fit the bottom of the mounting base and must be secured to the lip of the base with sheet metal screws (not included).
Also Available: Additional louver sizes. Please select 8061T999 and specify louver dimensions.
For technical drawings and 3-D models, click on a part number.
Louvers | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Opening | Overall | 8" Overall Ht. Mounting Bases | 12" Overall Ht. Mounting Bases | |||||||||||
Wd. | Ht. | Wd. | Lg. | For Max. Air Velocity, fpm | Temp. Range, °F | Mounting Fasteners Included | Each | Inside Wd. | Each | Inside Wd. | Each | |||
Surface Mount | ||||||||||||||
Galvanized Steel Frame and Aluminum Blades | ||||||||||||||
13 3/4" | 13 3/4" | 13 3/4" | 13 3/4" | 2,000 | -40° to 180° | No | 000000 | 000000 | 14 1/2" | 0000000 | 0000000 | 14 1/2" | 0000000 | 0000000 |
15 3/4" | 15 3/4" | 15 3/4" | 15 3/4" | 2,000 | -40° to 180° | No | 000000 | 00000 | 16 1/2" | 0000000 | 000000 | 16 1/2" | 0000000 | 000000 |
17 3/4" | 17 3/4" | 17 3/4" | 17 3/4" | 2,000 | -40° to 180° | No | 000000 | 00000 | __ | 000000 | 00 | 19 1/2" | 0000000 | 000000 |
19 3/4" | 19 3/4" | 19 3/4" | 19 3/4" | 2,000 | -40° to 180° | No | 0000000 | 00000 | 21 1/2" | 0000000 | 000000 | __ | 000000 | 00 |
21 3/4" | 21 3/4" | 21 3/4" | 21 3/4" | 2,000 | -40° to 180° | No | 0000000 | 00000 | __ | 000000 | 00 | 23 1/2" | 0000000 | 000000 |
23 3/4" | 23 3/4" | 23 3/4" | 23 3/4" | 2,000 | -40° to 180° | No | 0000000 | 00000 | __ | 000000 | 00 | 25 1/2" | 0000000 | 000000 |
27 3/4" | 27 3/4" | 27 3/4" | 27 3/4" | 2,000 | -40° to 180° | No | 0000000 | 00000 | __ | 000000 | 00 | 28 1/2" | 0000000 | 000000 |
34 3/4" | 34 3/4" | 34 3/4" | 34 3/4" | 2,000 | -40° to 180° | No | 0000000 | 000000 | 35 1/2" | 0000000 | 000000 | 35 1/2" | 0000000 | 000000 |
36 3/4" | 36 3/4" | 36 3/4" | 36 3/4" | 2,000 | -40° to 180° | No | 0000000 | 000000 | __ | 000000 | 00 | 37 1/2" | 0000000 | 000000 |