Uxcell 16" x 16" Adjustable Air Supply Diffuser, Aluminum Double Deflection HVAC Vent Cover Air Vent Register for Sidewall Wall Ceiling Floor HVAC System, White

Outer Size: 455 x 455mm/17.9 x 17.9 Inch(L*W*H) Inner Size: 395 x 395mm/15.6 x 15.6 Inch(L*W), suitable for the air duct/drywall opening size: 400 x 400mm/16 x 16 Inch(L*W) Height: 45mm/1.8 Inch Color: White Material: Aluminum Alloy Packing List: 1 Pcs x Aluminum Air Supply Diffuser