16
Register Required
FIG. 31
FIG. 32
Duct Size And Requirements For 3105007.XXX And 3105935.XXX Return Air Cover
Duct Size And Requirements For 33308120.XXX Genesis Air Filtration System Kit
Total Outlet Air Area
Minimum 21.0 Sq. In.
Total Outlet Air Area
Minimum 32.0 Sq. In.
Register Required
Register Required
Register Required
Register Required
Register Required
Register Required
Register Required
Roof
Rafters
Roof
Rafters
Note: Duct Size is Inside Dimensions
Note: Duct Size Is Inside Dimensions
Short Duct Run Minimum
1/3 Total Duct Length
Short Duct Run Minimum
1/3 Total Duct Length
Ducts
Min.
Max.
Depth
1-1/2”
2-1/2”
Width
7.0”
10.0”
Total Length
15.0’
40.0’
Ducts
Min.
Max.
Depth
2.0”
2-1/2”
Width
8.0”
10.0”
Total Length
15.0’
40.0’
14-1/4"x14-1/4" (±1/8")
Roof Opening
14-1/4"x14-1/4" (±1/8")
Roof Opening
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
620615, 620625 & 620626 Installation & Operating Instructions
