K Filter makes a wide range of collection cartridges to fit all popular makes and models of equipment.The cartridges feature heavy- duty construction to withstand wide use. We offer three grades of media, to match your application requirements. The standard media is Polyester, with a hydrobic binder, for exnt moisture resistance. There is also a flame-retardant version available. Our Spunbonded Polyester media has unsurpassed strength, enabling it an exnt choice for back-pulse applications, such as powder-coating, etc