34"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 7.75"h] return grille 3/8" - 4223 PSI

3/8" - 4223 PSI

actual front end outer dimensions are approximately 32 5/8" width X 18 5/8" height

Installation – Easy to Install

This simple adjustment reduces HVAC strain

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 18" duct openings

34"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 7.75"h] return grille 3/8" - 4223 PSI+ Product Details Size 34"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 7. 75" Height Weather and Pest Proof These louvers are especially designed to prevent water from entering your home, and with a built in back 1 2" mesh they also protect you from annoying rodents like mice, rats, birds, and squirrels High Quality Aluminum The premium durable aluminum will never rust and it will never wear