Retro-Brace with 2-1/8 in. Deep Box for Old Work, Two 1/2 in. KO's
RACO Old Work Round Boxes are 4-Inch diameter, 2-1/8in. Deep, and are used for fan or fixture applications. The boxes have three 1/2-Inch bottom knockouts and include an easy to install RETRO-BRACE. They are suitable for use in old-work applications.