36"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 17.75"h] Return + Product Details Size – LO246 Product Details Size 32 Compatible with Duct 4"

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

Designed for sidewall and ceiling installation with included screws

actual front end outer dimensions are approximately 36 5/8" width X 12 5/8" height

Works for all Air Conditioning applications including Ductless Mini-Split

36"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 37.75"w x 17.75"h] Return + Product Details Size – LO246 Product Details Size 32 Compatible with Duct 4" + Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only Designed for sidewall and ceiling installation with included screws