S1174W-SP PLASTIC KEYLESS LAMPHOLDER | Keyless Plastic ceiling lamp holders are molded of high-temperature, thermoset plastic to reduce breakage. Mounts on 4 in (101.6 mm) outlet boxes with breakout for 3-1/4 in (82.5 5 mm) box mounting. Leads are 6 in (152.4 mm) 105 deg C insulated stranded #16, stripped 3/4 in (19.05 mm). Pull chain devices include ball chain, 3 ft (0.91 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 push-in 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.