10"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 11.75"W X 21.75"H] Aluminum - Cube Core Design – Removable frame for 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
10"W X 20"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 11.75"W X 21.75"H] Aluminum Cube Core Design – Removable frame for 4 X 12 Is CRFG2028 Width_14in Design – Removable frame for easy filter change & cleaning uses a 1" thick filter Actual Filter Size – 17 3 4"w x 27 3 4" x 1"