36"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 37.75"w x 37.75"h] Compatible with Duct 8" + Product Details Perfect Fit Compatible with Duct 4" Product Details Size 32 LO246

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening)

+ Product Details Size – 10" x 32" or 32" x 10" is the size for the duct opening measurement only

1/2” - 3119 PSI

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 24" OR 24" X 14" duct opening (measured at the opening)

+ Product Details Size - 20"w X 20"h X 2"d (for duct opening measurement only)

36"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh White [Outer Dimensions 37.75"w x 37.75"h] Compatible with Duct 8" + Product Details Perfect Fit Compatible with Duct 4" Product Details Size 32 LO246 + Product Details Perfect Fit & Easy Sizing Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening) + Product Details Size – 10" x 32" or 32" x 10" is the size for the duct opening measurement only