Patent ID: 7232370

Claim:
An adjustable roof jack adapted for mounting on a flat or pitched roof, the roof jack is designed to engage a lower end of an air discharge duct from an air conditioning unit and received around a top of an air supply duct in the roof, the roof jack comprising: a lower frame member having a front side, a back side, a first side and second side, a lower portion of the sides of said lower frame member adapted for receipt around the top of the air supply duct; an upper frame member having a front side, a back side, a first side and second side, a top portion of the front side of said lower frame member hinged to a bottom portion of the front side of the upper frame member; and a flexible, expandable boot attached to a top portion of the sides of said lower frame member and attached to a lower portion of the sides of said upper frame member, said flexible boot adapted for receipt around a portion of the lower end of the air discharge duct, said boot expanding upwardly for covering a space created between a bottom of said upper frame member and a top of said lower frame member when the adjustable roof jack is mounted on a pitched roof.