262291-YTG-F-100948 Johnson Controls Unitary Products1. The 2” space between the ducts allows for “jumping” anexisting roof joist.2. The 58-1/2” overall dimension of the ducts allows duct-work penetration between roof joists that are spaced on72” centers.Note: Ducts can be installed into the curb from the roof. Allelectrical and gas line connections can be made inside thecurb.FIGURE 10 - UNIT ROOF CURB DIMENSIONS25-1/4"FIGURE 11 - ROOF CURB DUCT OPENINGSDIMENSIONFIGURE 12 - CUT AWAY OF ROOF CURB
