Aluminum Garage Door Air Vent Grille Register - with Damper Control Lever for Winter & Summer Settings - with Insect Net Prevent Guard [Outer Dimensions: 17.5"w X 12"h]

Outer Dimensions Are 17.5" Wide x 12" Tall x 2.75" Deep - Will Fit All Garage Doors - Insulated And Non Insulated Garage Doors [The Hole In The Door Should Be: 15 ¼ x 9 ¾] Made of High Quality Aluminum That Will Never Rust Control Lever To Adjust Louvers According To Season - Completely Open For Summer To Release The Heat, Closed For Winter To Prevent The Cold With Insect Net That Will Prevent Mousquitos and Insects From Entering To Maximize Ventilation Results, Install 2 Vents. One Towards The Top Of The Door, And One Towards The Bottom Of The Door. This Will Create A Cycle Of In And Out Air Flow. As The Hot Air Will Flow Up & Out, And The Cooler Air From Outside WIll Flow In From The Bottom