036-21233-002-A-0903
Unitary Products Group 25
FIGURE 11 - ROOF CURB DIMENSIONS
1
FIGURE 12 - ROOF CURB CROSS SECTION
OPENING FOR
RETURN AIR DUCT
OPENING FOR
SUPPLY AIR DUCT
14
3-1/2
17-5/8
40-3/4
42-2/3
45-1/8
43-1/4
17-1/4
22
1
RECOMMENDED
DU C T SIZE
17-1/8" X 21-1/2"
RECOMMENDED
DU C T SIZE
17-1/2" X 16-3/4"
1. 8” Roof curb also available
3/4" X 1" W IDE G ASKETING FO R CURB FRAM E
AND ALL DUCT SUPPORT SURFACES
UNIT BASE
WOOD NAILER
8" M IN. ABO VE FINISHED RO OF
CURB FRAM E
IN S U L A T IO N
UNIT BASE RAIL
COUNTERFLASHING
CANT STRIP
IN S U L A T IO N A N D R O O F IN G M A T E R IA L
ROOF DECT AND ROOFING MATERIAL
14"
1"
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