20"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 23.75"H] w16h16 9% Pure Copper meeting ASTM MFACRA88W1 Condensate Pump Product Details Size 20
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Description
20"W X 22"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 23.75"H] w16h16 9% Pure Copper meeting ASTM MFACRA88W1 Condensate Pump Product Details Size 20 9% Pure Copper meeting ASTM B280 standards and matte black