Westinghouse 0103611 Saf-T-Pan, 1/2-Inch Deep Support box allows for safe installation of a ceiling fan or light fixture; attaches to an existing ceiling joist Fits all ceiling fan models; 1/2-Inch-deep box with 6-cubic-Inch capacity Dual mounting capabilities; five knockouts for Conduit or Romex UL listed for lighting fixture support of 150 pounds or less, acceptable for fan support of 70 pounds or less Bulk-packed mounting pan. Includes Saf-T-Cap to protect inner workings during drywall installation or painting