Ring Heater A-65w 240v 2500w (Pcn 207378) 6-1/8" Od, 3" Id, 5/16" Thk, For Single Wattage On-off Switch Or Thermostat With Two Terminals--1-1/2" Wide By 17/32" Ht. Cross Reference Part Number: 85231906, Ep 2118-23