So you have a torpedo or salamander kerosene forced air heater made by Desa? The PP213 half-moon filter kits fit brand names such as Master, Reddy, Remington, Knipco, Dayton, and Nipco. So when looking for a PP213 or HA3014, equipsupply.com will make your search easy and simple to find this half moon three part filter kit. This PP213 half moon filter kit includes the input, output, and lint filters. The HA3014 or PP213 half-moon filter kit fits the rounded style covers. The PP213 lint filter is a small square foam piece. The output filter is a half-circle cork piece with a mesh screen in the middle. The input filter is also made of a black sponge and looks like a half moon. Keep your shopping simple and make equipsupply.com your one source to purchase all of your heater parts needs.