24"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 15.75"h] 6" Round Duct Pipe Noise free components - No

Noise free components - No vibrating louvers etc

actual front end outer dimensions are approximately 16 5/8" width X 30 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 20" OR 20" X 14" duct opening (measured at the opening)

Design – These are specially sized to fit into all drop ceilings

+ Product Details Size – 8"w X 4"h is the size for the duct opening measurement only

24"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 15.75"h] 6" Round Duct Pipe Noise free components - No+ Product Details Size 24"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 15. 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