21st Century"s Fiberglass Kerosene Heater Wicks are made of graphite coated fiberglass, a re-inforced cloth band and the highest quality cotton. Wick Model 129 fits Crestline 3660, Dyna Glow CONV MAXI 20 (14-2603-32) Energy Mart EM-51C, Heat Mate 800, Kerotech BEACON 35, Sunwise SPC 12 and more Contact us for a free cross reference chart..