MV360S round grille. Ceiling diffuser grill with adjustable neck. Note: The product includes an adjustable airflow damper, but without an intake damper. See related products for sweeping shock absorbers. The MV model with its unique design and contractor-friendly engineering saves money by reducing installation time by up to 80%. An all-in-one diffuser, starter and shock absorber is installed in seconds with just a few simple steps. Features: It will accept 4, 5 and 6 inch duct sizes with tear bands so that no cutting is required. - The mounting clips swivel into position, fastening the unit to the roof material quickly and easily. - An adjustable fixed-position damper allows you to adjust the mounting of the air moving through the grille. - Includes 1 tie strap A= 9 3/8 B= 7 1/8 C= 5/8 D= 1 3/8 E= 3 1/4 F= 5 1/4 G= 7 1/4 duct does not fit flush against the diffuser. The diffuser fits a 7-1/8-inch hole.

Warranty: 90 Day Woot Limited Warranty