Check the listing for details. 5"x5" Aluminum Square Ceiling Diffuser White 8" x 8" Ducting Opening Size. Condition: New. Listed at 22.75 USD. This aluminum air supply diffuser is widely used in malls, office buildings, restaurants, homes, and offices, perfect for ceiling installation for low and medium-pressure intake or exhaust ventilation, air conditioning system, fresh air ventilation system. This vent cover provides horizontal air flow in 4 way for better air distribution.SpecificationExternal Size: 250 x 250mm/9.8 x 9.8 Inch(L*W)Neck Size: 125 x 125mm/4.9 x 4.9 Inch(L*W) for 5 x 5 Inch ventilation duct or canalDuct Opening Size: 200 x 200mm/8 x 8 Inch(L*W)Height: 55mm/0.2 InchColor: WhiteMaterial: Aluminum AlloyPacking List: 1 Pcs x Air Supply DiffuserAdvantageDurable Material: Made from aluminum alloy with a matte finish, this durable air supply diffuser is waterproof, moistureproof, anti-oxidation, and not easy to fade and wear. Can resist high and low temperatures.