4 in. x 2 in. Handy Extension Ring, Drawn, 1-7/8 in. Deep, Eight 1/2 in. KO's
Drawn construction
4 in. x 2 in., 1-7/8 in. deep
Key holes provided for ease of installation
Supplied with eight 1/2 in. knockouts
13 cu. in. capacity
Acceptable for use in 2-hour fire rated walls