Unique Bargains - 2Set 4" Round Ceiling Diffuser, 304 Stainless Steel Adjustable Wall Air Vent Diffuser Duct Cover Exhaust Supply - White

The round air vent is good for use in residential buildings, offices, kitchens, bathrooms, and other HVAC systems that require air intake and exhaust ventilation. Also it is suitable for use in both new construction and renovation projects.