30° Thinline Outdoor Louver Gable Vent (Channel Frame) - Customizable 170BL 25X16 + Product Details Size -

+ Product Details Size - 16"w X 4"h is the size for the duct opening measurement only

High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

+ Product Details Size - 22"w X 20"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

30° Thinline Outdoor Louver Gable Vent (Channel Frame) - Customizable 170BL 25X16 + Product Details Size -Our 30 Thinline Aluminum Louver Vent Exterior Air Grille for Walls, Gables & Crawlspaces is Weather Resistant with a Channel Frame. Features Fixed 30 horizontal blades on 3 4" spacing. Fully extruded aluminum blades and channel 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 manufactured up to 1 16" increments. Mounting