30° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable 4" Diameter + Product Details Size –

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

+ Product Details Size - 34"w X 34"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 35 3/4" x 1"

Actual Filter Size – 19 3/4"w x 21 3/4" x 1"

and practicality

30° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable 4" Diameter + Product Details Size –Our 30 Thinline Aluminum Louver Vent Exterior Air Grille for Walls, Gables & Crawlspaces is Weather Resistant with a Wide Flange Frame. Features Wide flange for additional mounting surface coverage Fixed 30 horizontal blades on 3 4" spacing Fully extruded aluminum blades and frame Supports are hidden behind blades for a clean appearance Bird screen is standard or optional insect screen Available in 1" standard dimension increments Custom sizes