Greenseam Collar w/Damper 4 in Duct Dia GR6POCR4GA26D

For use with GreenSeam+ snap pipe (sold separately), a self-sealing duct for commercial and residential applications. Pipe is engineered with a LEED qualifying zero-VOC gasket; eliminates additional sealing along the longitudinal seams and transverse joint. When fitting is used with GreenSeam pipe, the design can reduce energy costs and increase overall system efficiency.