Imperial DR-04 Air Diffuser with Collar, 4 in Duct Opening, Polypropylene, White

Boflex DR-type diffusers are made entirely of white polypropylene and are supplied with an adaptor made of the same material. This quality construction increases their corrosion resistance, two flow settings allow for easy control of air intake or output from 0 to 100%, for outstanding efficiency. Boflex diffusers integrate with any heating, air conditioning, air exchange or venting system and can be connected to a flexible or rigid duct. These highly functional units are completely silent and feature an attractive design which allows them to be installed anywhere.