28"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 19.75"h] white 5" - SEE BELOW IN

5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

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Actual Filter Size – 24 3/4"w x 5 3/4" x 1"

much more than required 700 PSI for R410

actual front end outer dimensions are approximately 27 5/8" width X 20 5/8" height

28"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 19.75"h] white 5" - SEE BELOW IN+ Product Details Size 28"w X 18"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 19. 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