Hubbell Raco 4 in. Round Ceiling Rated Box, 2-1/8 in. Deep, Three 1/2 KO's, for New and Old Work

No protruding ground screw or fan mounting screws allows easy installation
Metal protection plate eliminates debris or damage to wiring
Setback tab allows for easy installation of different wall thickness
New work applications rated at 150 lbs. Old work applications rated at 70 lbs
Supplied with three 1/2 in. knockouts
#10-32, 1 in. long ceiling fan screws provided and provision for #8-32 fixture mounting screw
Easy to follow instructions and mounting hardware included