4"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 5.75"W X 31.75"H] Adjustable Return With precise measurements and easy Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

With precise measurements and easy installation

+ Product Details Size - 28"w X 12"h is the size for the duct opening measurement only

& EN 13180 standards

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

Operating from -40°F to +248°F

4"W X 30"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 5.75"W X 31.75"H] Adjustable Return With precise measurements and easy Compatible With Duct 7in Applications This sheet metal DDAG A 1212 With precise measurements and easy installation + Product Details Size 28"w X 12"h is the size for the duct opening measurement only