45° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable 16" Round Duct Pipe + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 10" OR 10" X 18" duct opening (measured at the opening)

Tamper-Proof Design – Provides robust protection to prevent unauthorized access and ensure consistent thermostat settings

With crimped ends for easy fitting and secure connection to consecutive duct joints

actual front end outer dimensions are approximately 22 5/8" width X 28 5/8" height

45° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable 16" Round Duct Pipe + Product Details Perfect FitOur 45 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 45 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