For ceiling fans and fixtures Short Brace fits down to 12 in. to 16 in. on center Supports ceiling fans up to 70 lbs.. 4 in. hole saw installation Energy efficient round design includes 5 knockouts for conduit or NM cable and includes 1 NM cable connector Compatible with most fans and fixtures, with both 10-24 and 8-32 threads Sharp gripping teeth bite into ceiling joists Designed for installation without having to access attic space Includes mounting hardware and easy to follow instructions