Impact Acoustics(?) Structured Wiring system accessory kit will help your installation of your enclosure and cabling. Grommets protect your cables from abrasion as the enter the round pre-punched knock-out holes. Mounting tabs lock into the enclosure for mounting to the front of a wall stud or use the screws and washers to fasten the enclosure between wall studs. Hook and loop fasteners are used to dress the cables after installation and allow easier access to cable bundles for future system modifications.