York DH 300 User Manual

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.