24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 25.75"w x 37.75"h] w20h20 + Product Details Perfect Fit RFG1820AL Height_32in We have the largest

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 16" or 16" x 6" duct opening (measured at the opening)

Actual Filter Size – 47 3/4"w x 23 3/4" x 1"

+ Product Description Enhance your HVAC system with our premium Aluminum Double Deflection Adjustable Air Supply Diffuser

+ Product Details Size – 14"w X 6"h is the size for the duct opening measurement only

24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh White [Outer Dimensions 25.75"w x 37.75"h] w20h20 + Product Details Perfect Fit RFG1820AL Height_32in We have the largest + Product Details Perfect Fit & Easy Sizing Designed for a 6" x 16" or 16" x 6" duct opening (measured at the opening) Actual Filter Size – 47 3 4"w x 23 3 4" x 1"