8"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 27.75"h] w18h18 actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 38 5/8" height

rotate it to align with the square frame

+ Product Details Size – 24" x 24" with 10" collar T-Bar drop ceiling perforated return grill - metal back casing

6"w X 6"h Is The Size For The Duct Opening Measurement Only

Upgrade your HVAC system with a high-quality aluminum return grille designed for a clean

8"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 27.75"h] w18h18 actual front end outer dimensions+ Product Details Size 8"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 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 wear