4"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 5.75"W X 23.75"H] w14h14 + Product Details Size - SV2414 HP 12" Round Duct Pipe Product Details Perfect Fit

+ Product Details Size - 12"w X 16"h is the size for the duct opening measurement only

designed for both sidewall and ceiling installations

+ Product Description When it's time to upgrade your HVAC Vents in your house

Crafted from solid stamped steel

+ Product Details Size - 14"w X 10"h is the size for the duct opening measurement only

4"W X 22"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 5.75"W X 23.75"H] w14h14 + Product Details Size SV2414 HP 12" Round Duct Pipe Product Details Perfect Fit + Product Details Size 12"w X 16"h is the size for the duct opening measurement only designed for both sidewall and ceiling installations