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262260-YTG-E-1008
Johnson Controls Unitary Products 39
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
ductwork 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 11 - UNIT ROOF CURB DIMENSIONS
(17.5 thru
25 Ton)
(17.5 thru
25 Ton)
FIGURE 12 - ROOF CURB DUCT OPENINGS
DIMENSIONS
(17.5 & 20 Ton)
FIGURE 13 - CUT AWAY OF ROOF CURB