Seal wall openings and protect cables from harm and abrasion damage. Crafted out of ABS plastic, these are weatherproof and 'varmit-proof' when used in conjunction with a silicone seal (sealant sold separately). Durable and perfect for running low-voltage cables through walls. (100) Bushings are included, and they require a 1/2' pre-drilled hole for installation. Dimensions: 7.44 x 6.57 x 3.43 inches.