This Westinghouse Saf-T-Box allows you to safely install a fan or lighting fixture during new construction or in locations with attic access. The Saf-T-Box features a heavy-duty, all-metal, 21.5-cubic-inch, dual-mount electrical box, and works with any model of ceiling fan. The included Saf-T-Cap will protect bolts and wires during drywall installation and painting. The Saf-T-Box is UL listed to support fans up to 70 pounds and light fixtures up to 150 pounds. Dual mounting capability, includes 10-24 threads for heavier fans and fixtures, as well as 8-32 threads for cover plates and lightweight light fixtures. Westinghouse is a trusted, global brand. Westinghouse knows lighting and offers products with exceptional quality, reliability and functionality. Product reference number 01040.