24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w36h36 Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 27 3/4" x 1"

much more than required 700 PSI for R410

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening)

and lay it flat in the grid

24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w36h36 Actual Filter Size – 21+ Product Details Size 24"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 25. 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