8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 9.75"w x 17.75"h] 14" Round Duct Pipe Actual Filter Size – 35 AD-S-230-10x10 Actual Filter Size 25 Width_8in

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

Rigid Built For External Use – The sturdy and rigid design features noise-free components that eliminate vibration and excess noise to the louvers

actual front end outer dimensions are approximately 30 5/8" width X 14 5/8" height

85" width X 15

actual front end outer dimensions are approximately 26 5/8" width X 24 5/8" height

8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Black [Outer Dimensions 9.75"w x 17.75"h] 14" Round Duct Pipe Actual Filter Size – 35 AD S 230 10x10 Actual Filter Size 25 Width_8in Actual Filter Size – 35 3 4"w x 27 3 4" x 1" Rigid Built For External Use – The sturdy and rigid design features noise free components that eliminate vibration and excess noise to the louvers