Keyless Plastic ceiling lamp holders are molded of hightemperature, thermoset plastic to reduce breakage Mounts on 4 in 1016 mm outlet boxes with breakout for 314 in 825 5 mm box mounting Leads are 6 in 1524 mm 105 deg C insulated stranded 16, stripped 34 in 1905 mm Pull chain devices include ball chain, 3 ft 091 m of cord, connector and endbell Top wire versions have terminal screws backed out ready for wiring without removing interior Push wire terminals are top wired with two pushin terminals and two screw terminals for continuous wiring Sockets available in two piece version to permit interior replacement, dust ring protects against plaster and dirt Shade grooves provided on two piece units