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AIR
SMALL
BASE
UNIT
SUPPLY
AIR
LARGE
BASE
UNIT
UNIT PLACEMENT ON
COMMON CURB
LARGE CURB
SMALL OR LARGE BASE UNIT
SMALL/COMMON CURB
ROOF CURB DETAIL
Wood nailer*
Roofcurb*
Insulation
(field supplied)
*Provided with roofcurb
Cant strip
field supplied
Roofing material
field supplied
Flashing field
supplied
HVAC unit
base rails
Roofcurb
Sealing
Gasket
HVAC unit
basepan
Anchor screw
A09090
A09413
A09094
A09415
C
B
A
F
D
E
Dashed lines show cross support
location for large basepan units.
G
H
C
B
A
F
D
E
G
H
A09414
Fig. 4 -- Roof Curb Dimensions
UNIT
SIZE
CATALOG
NUMBER
A
IN.
(mm)
B (small/common
base)
IN. (mm)*
B (large base)
IN. (mm)*
C
IN.
(mm)
D
IN. (mm)
E
IN. (mm)
F
IN.
(mm)
G
IN. (mm)
H
IN. (mm)
Small
or
Large
CPRFCURB010A00 11 (279)
10 (254)
14 (356) 16 (406) 47.8 ( 1214)
32.4 (822)
2.7 (69)
30.6 (778)
46.1 (1170)
CPRFCURB011A00 14 (356)
Large
CPRFCURB012A00 11 (279)
14 (356) 43.9 (1116) 42.2 (1072)
CPRFCURB013A00 14 (356)
* Part Numbers CPRCURB010A00 and CPRCURB011A00 can be used on both small and large basepan units. The cross suppo r ts must be located based on
whether the unit is a small basepan or a large basepan.
NOTES:
1. Roof curb must b e set up for unit being installed.
2. Seal strip must be applied, as re quired, to unit beinginstal led.
3. Roof curb is made of 16---gauge steel.
4. Attach ductwork to curb (flanges of duct rest on curb).
5. Insula ted panels: 1---in. (25 mm) thick fiberglass 1 lb. density.
607C-- --A