The package will consist of: Door ventInstallation templateScrews (three sets of matching screws for a door from 1” up to 1 ¾” thickness)) Installation instructions: Place the template on the door. Use a pencil to trace around the template.Drill holes at each corner of the traced template.Insert the blade of a jigsaw into one of the holes. Use the jigsaw to carefully cut along the possible, sand and round the edges of the opening you’ve created.Slide the vent into the the matching screws to screw both sides of the door vent together. HVAC door grille will prevent your doors from slamming and ensure free air circulation between rooms. Door grilles are used in the bathroom, toilet, cabinet, storeroom, or any other room you need.