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
Plastic models made with high-temperature thermoset plastic to reduce breakage
Porcelain models made of high-strength insulator porcelain pull chain versions feature removable interiors
Mounts on 4 in outlet boxes with breakout for 3-1/4 in box mounting