24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 31.75"h] Filter Grille + Product Details Size - Sheet Metal RG2016 FBA-HP actual front end outer

+ Product Details Size - 28"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 8"h is the size for the duct opening measurement only

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

actual front end outer dimensions are approximately 34 5/8" width X 12 5/8" height -

sized to fit into all drop ceiling system

24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 25.75"w x 31.75"h] Filter Grille + Product Details Size Sheet Metal RG2016 FBA HP actual front end outer + Product Details Size 28"w X 18"h is the size for the duct opening measurement only + Product Details Size 32"w X 8"h is the size for the duct opening measurement only