Mr. Heater Filter Kit for Kersone Featers 2004 and Older Fits the following heaters - REDDY HEATER - R100; R100A; R100B; R110; R150B; R150BT; R150D; R155; R165 Fits the following heaters - MASTER - B100A; B100B; B100G; B110; B150F; B150FT; B150G; B150GT; B165 Fits the following heaters - DESA - C100D; C100E; C100F; 150F Fits the following heaters; KOEHRING - K100A Fits the following heaters - KNIPCO - F110E; F110F; F110G; F110H; F150H