30"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 9.75"H] Supply Grille Powder-Coat Finish – Never rust 4 X 12 Is CRFG2028 Width_14in

Powder-Coat Finish – Never rust

5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

heat pump and centralized air ducted units

+ Product Details Size – 10" X 4" is the size for the duct opening (floor/vent hole) measurement only

30"W X 8"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 9.75"H] Supply Grille Powder Coat Finish – Never rust 4 X 12 Is CRFG2028 Width_14in Powder Coat Finish – Never rust 5" SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE