Hubbell-Raco 294 2-1/8-Inch Deep, 1/2-Inch Side Knockouts, Wood Joist Bracket 4-Inch Octagon Ceiling Fan Support Box The product is 4" x 2-1/8" Deep Octagon Box, FA Style Bracket, 1/2" Knockouts Easy and simple use kit The product is manufactured in China Nonmetallic sheathed cable connector Mounting hardware High strength, hardened screws Knockouts in bottom of box Easy entry and exiting