30"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 7.75"h] 14" Round Duct Pipe Design – 180 degrees double CRFG2028 Width_14in 4 X 12 Is

Design – 180 degrees double direction adjustable - fins are manually adjustable individually for optimal air distribution

+ Product Details Size - 24"w X 28"h is the size for the duct opening measurement only

actual front end outer dimensions are 3"

actual front end outer dimensions are approximately 36 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 30 5/8" width X 22 5/8" height

30"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 7.75"h] 14" Round Duct Pipe Design – 180 degrees double CRFG2028 Width_14in 4 X 12 Is Design – 180 degrees double direction adjustable fins are manually adjustable individually for optimal air distribution + Product Details Size 24"w X 28"h is the size for the duct opening measurement only