DESIGN & DETAILS: Mr. Heater 30-in/15-in Propane Distribution Post Tree is a 15-in post with a 15-in extension that can hook up to 3 appliances to a single refillable bulk cylinder Three 1-in - 20 Male Throwaway Cylinder Threads x Full Flow Soft Nose P.O.L. Use with F273712 hose assembly Hooks 3 appliances to a single 20 lb. cylinder Can hook up to new and old style cylinders