The Dyna-Glo 15K-25K BTU Propane Convection Heater is ideal for outdoor/indoor construction . as well as industrial & commercial applications . making it an excellent choice for your portable heating needs. It features 1-hand piezo ignition . continuously variable heat settings . and requires no electricity. This unit offers a 25 .000 BTU maximum capacity . sufficient to heat an area up to 600 sq. ft. It is equipped with a large sturdy base to prevent tipping and an automatic overheat shutoff to ensure safe use. 360-degree heat radius Inner Windshield 2-piece Knockdown Burn Chamber Auto Safety Shutoff. Large Sturdy Base Prevents Tipping. 1 handed Piezo ignition. Includes hose and regulator assembly. (LP tank sold separately).