Socket-Mount Screw-In Base, Voltage 120/240V AC, Overall Length 2-5/16 in, Diameter 2 5/16 in, For Use With 4TDD1-4TDD9, 4TDE1-4TDE5, Material Ceramic, Color Beige, Connection Type Screw terminals, Fits Heater Type Radiant Process Heaters, Heater Mounting Position Horizontal or Vertical Burn. This item has been restricted from sale in the following state (s): []