Clean, efficient propane can be achieved by using this universal fuel filter from Mr. Heater! WARNING: This product can expose you to chemicals including lead and lead compounds which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov Required for use with all Portable Buddy and Big Buddy Heaters whenattaching to a 20 pound propane tank Most commonly used withF273701(5&&';;) and F273702(12&&';;) Hose Assemblies