34"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 29.75"h] RG66 Black-HP Upgrade your air distribution strategy

Upgrade your air distribution strategy today – invest in the efficiency and convenience of the 6" Butterfly Damper

These are specially sized to fit into all drop cielings

+ Product Details Size - 6"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 9

34"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 29.75"h] RG66 Black-HP Upgrade your air distribution strategy+ Product Details Size 34"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 29. 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