This SafTBox allows you to safely and securely install a ceiling fan or light fixture during new construction or in locations with attic access This heavyduty, 112 in, allmetal electrical box, with 155 cuin wiring capacity is UL listed to support fans up to 70 lb and light fixtures up to 150 lb Featuring dual mounting capability, it includes 10 to 24 threads for heavier fans and fixtures and 8 to 32 threads for cover plates and lightweight lighting fixtures The SafTBox also includes a saftcap to protect bolts and wires during drywall installation and painting