P200 Ignitor is the Hot Surface Ignitor HSI that was used on many of the portable kerosene and diesel portable forced air heaters sold by DESA International... PP200 Hot Surface Ignitor Hsi is designed to fit all of the original equipment replacement applications for the original HA1000 Hot Surface Ignitors used for many of the portable heaters made by DESA International and labeled under various private labels including Reddy heater, Remington, Master, Dayton, John Deere, All-Pro and several others... This PP200 HSI Ignitor will fit all 2 wire L-Block Style mounting applications Reddy Heater, Master Heaters, Dayton Oil fired systems, All-Pro kerosene and diesel heaters as well as many others.