Description Stratus White Plastic 2'x2' CONE Air Diffusers by American Louver is made with collars from 6" to 14" (backplate included). Ideal for restaurants, hospitals, MRI rooms, dishwashing rooms, office buildings and clean environments. Fits in a 2'x2' ceiling grid system. *Durable ABS material. *Will not rust. *Will not chip or bend (colorant molded into part). *Resists sweating (reducing dust buildup). *Easy to clean. *No Sharp Edges *2" tall neck (for easier connections) *6", 8", 10", 12", 14" collar sizes *Available Black Plastic also *OD= 23-3/4" x 23-3/4". Collar/Neck depth = 2.46", plenty of space to attach the air duct. Reducer available that adapts to the 14" collar only, item # 4945W-C-14. Reduce the 14" collar down to 12", 10",8", or 6". Be ready for any duct size. Product Videos Air Diffuser Blog Pages Benefits of Plastic Air Diffusers Spec Sheets & Data Cone Air Diffuser Flyer, PDF Submittal: Cone Air Diffuser Performance Data Line Drawing for 4945 Product Performance Plastic compare to Metal Plastic Diffuser Sell Sheet