Mounting curb for multiple unit air conditioning system

摘要

A mounting curb for rooftop packaged air conditioning units comprising a generally rectangular frame having a bottom wall with adjacent return and supply air duct openings formed therein and in communication with respective common supply and return air ducts formed in the curb. The return air duct includes opposed branch portions leading to openings in the top wall of the curb in communication with the return air openings in the air conditioning units. The supply air duct includes opposed branch portions also in communication with respective supply air openings in the bottom wall of the air conditioning unit enclosures. The supply air duct is disposed generally over the return air duct and inward therefrom with respect to the opposite end walls of the curb.