These round plastic are easy to install. They fit into the hole made by a drill type hole saw and are held in plby knobs on the side. They are used for ventilating soffits and eaves, insect cages, display cases and spice racks. Package of 6 vents. Features: Easy to install Built in insect screen Available in White, Brown, Black, and Mill Sizes from 1 inch to 6 inch Heavy Aluminum Item Dimensions: 7" L x 5" W x 1" H.
