Conventional Curbs
Conventional curbs are frames used to secure mechanical equipment such as air conditioning units, skylights, or exhaust fans to your roof. A roof curb helps support the weight of the mechanical unit and allows for contractors to gain more convenient access to the ductwork.
UPP-4
Pipe Portal, 4 connections
Product Overview
Model UPP-4, Conventional roof curb with vertical pipe flashing and cover; for use with pipe penetrations from 3/8 to 6" diameter."