036-21410-001-A-0502
48
Unitary Products Group
1.
The 2” space between the ducts allows for “jumping” an
existing roof joist.
2.
The 58-1/2” overall dimension of the ducts allows duct-
work penetration between roof joists that are spaced on
72” centers.
NOTE:
Ducts can be installed into the curb from the roof. All
electrical and gas line connections can be made inside the
curb.
FIGURE 9: UNIT ROOF CURB DIMENSIONS
25-1/4"
FIGURE 10:ROOF CURB DUCT OPENINGS
DIMENSION
FIGURE 11: CUT AWAY OF ROOF CURB