20"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 37.75"H] steel rated at R3 MFACRA88W1 Condensate Pump Product Details Size 20
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20"W X 36"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 37.75"H] steel rated at R3 MFACRA88W1 Condensate Pump Product Details Size 20 rated at R3 #hvac product accordion { border: 2px solid #5296DD