22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return + Product Details Size - Compatible with Duct 4" Product Details Size 32 LO246

+ Product Details Size - 6"w X 20"h X 2"d (for duct opening measurement only)

+ Product Details Size - 20"w X 14"h X 2"d (for duct opening measurement only)

Design – Rigid gauge ABS plastic

actual front end outer dimensions are approximately 36 5/8" width X 26 5/8" height

+ Product Details Size – 10"w X 8"h is the size for the duct opening measurement only

22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return + Product Details Size Compatible with Duct 4" Product Details Size 32 LO246 + Product Details Size 6"w X 20"h X 2"d (for duct opening measurement only) + Product Details Size 20"w X 14"h X 2"d (for duct opening measurement only)