36"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 33.75"h] flat stamped steel with actual outer dimensions of Width_20in These won t hinder RFG1620 FBA

with actual outer dimensions of 28

actual front end outer dimensions are 25" Width X 13" Height

+ Product Details Size - 8"w X 12"h X 2"d (for duct opening measurement only)

+ Product Details Size - 36"w X 10"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 18" OR 18" x 28" duct opening (measured at the opening)

36"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 37.75"w x 33.75"h] flat stamped steel with actual outer dimensions of Width_20in These won t hinder RFG1620 FBA with actual outer dimensions of 28 actual front end outer dimensions are 25" Width X 13" Height