5 Pcs, 4" Square Extra Shallow Junction Box, 1-1/4 In. Deep, (12) 1/2 In. Side Knockouts, 0.0625 Galvanized Steel for Lighting Fixtures, Switches, Receptacles Or Outlet Devices - Walmart.com
Steel City 58361-1/2 :: Handy Box, 1-7/8" Deep, 1/2" KOs, Drawn, Steel :: Rexel USA
RACO Single Gang Drawn Handy Box, 1-7/8 in. Deep with 1/2 and 3/4 in. KO's (50-Pack) 666 - The Home Depot