Raco 0296 4" Octagon Ceiling Fan Support Box, 1-1/2" Deep, 1/2" Side KnockoutsRaco 0296 4" Octagon Ceiling Fan Support Box, 1-1/2" Deep, 1/2" Side Knockouts Features:; Includes nonmetallic sheathed cable connector, mounting hardware, and instructions; High strength, hardened screws; Knockouts in bottom of box allows for easy entry and exiting with cablesRaco 0296 4" Octagon Ceiling Fan Support Box, 1-1/2" Deep, 1/2" Side Knockouts Specifications:; Box Type: RACO Steel Boxes & Covers; Box Family: Ceiling Fan Support Boxes, Pans, Braces; Box Category: Direct Joist Mount Fan Boxes; Category: Ceiling Fan Box; Box Depth: 1-1/2"; Side Knockout(s): 4, 1/2"; Bottom Knockout(s): 3, 1/2"; Bracket Type: No bracket; Drawn or Welded: Drawn; Cubic Inch Capacity: 15.5; UPC Number: 050169002964; Raco ceiling fan support boxes are listed for support of ceiling fans up to 35 pounds; Lock-washers prevent the high strength screws from Loosening from vibration; Raco fan boxes may serve as fixture support for fixtures up to 50 pounds; 1/2" knock outs; 15.5 cubic inches; 1-1/2" deep; 4" octagon