36"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 37.75"w x 37.75"h] Powder-Coated this 4-way air vent diffuser

this 4-way air vent diffuser allows you to precisely control airflow

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 26" OR 26" x 18" duct opening (measured at the opening)

5" Wide x 12" Tall x 2

Actual Filter Size – 31 3/4"w x 5 3/4" x 1"

+ Product Details Size - 14"w X 34"h is the size for the duct opening measurement only

36"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 37.75"w x 37.75"h] Powder-Coated this 4-way air vent diffuser+ Product Details Size 36"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 37. 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