18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 19.75"w x 25.75"h] 10in diameter + Product Details Perfect Fit MFACRA88W1 Condensate Pump Product Details Size 20
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Description
18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Black [Outer Dimensions 19.75"w x 25.75"h] 10in diameter + Product Details Perfect Fit MFACRA88W1 Condensate Pump Product Details Size 20 + Product Details Perfect Fit & Easy Sizing Designed for a 22" x 28" OR 28" x 22" duct opening (measured at the opening) The first number in a grille size