28"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 23.75"h] d Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 35 3/4" x 1"

Actual Filter Size – 19 3/4"w x 25 3/4" x 1"

Versatile Compatibility: Our ceiling grills aren't limited to just T bar drop ceilings

10" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

+ Product Details Size - 18"w X 36"h is the size for the duct opening measurement only

28"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 23.75"h] d Actual Filter Size – 25+ Product Details Size 28"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 23. 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