28"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 27.75"h] Aluminum Bar + Product Details Size -

+ Product Details Size - 26"w X 36"h is the size for the duct opening measurement only

+ Product Description Protect your thermostat with the durable and tamper-proof Beige Metal Thermostat Guard

+ Product Details Size – 25"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 35 3/4" x 1"

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28"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 27.75"h] Aluminum Bar + Product Details Size -+ Product Details Size 28"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 27. 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