32"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 35.75"h] Aluminum Adjustable Curved Blade actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 20 5/8" height

+ Product Description Upgrade your HVAC system with our 6" Round Air Vent Supply Grille

R value rating of insulation - R3

actual front end outer dimensions are approximately 34 5/8" width X 27 5/8" height -

32"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 35.75"h] Aluminum Adjustable Curved Blade actual front end outer dimensions+ Product Details Size 32"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 75" Width X 35. 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