This Comfort Gear Infrared Heater is designed to provide instant warmth and comfort in various settings, making it an essential addition to your outdoor and indoor activities. With a powerful output of 18, 000 BTUs, this heater can effectively warm spaces up to 450 square feet, ensuring you stay cozy during chilly days and nights. It operates using two 1-pound disposable propane bottles, allowing for easy setup and portability. The heater features a protective grill guard for safety, and it can run for up to four hours on a single 1-pound propane tank, making it perfect for extended use. Additionally, it is equipped with a built-in oxygen depletion sensor and a tip-over shut-off mechanism, providing peace of mind while you enjoy its warmth. Whether you're relaxing on the porch, working in the garage, or enjoying outdoor activities like ice fishing and camping, the Comfort Gear heater is your reliable source of heat.• Provides instant infrared heat• 18, 000 BTUs• Heats up to 450 sq. ft.• Uses two 1-lb. disposable propane bottle• Protective grill guard• Operates up to 4 hrs. on one 1-lb. propane tank• Built-in oxygen depletion sensor and tip-over shut offSpecsFuel Type: PropaneTemp Control: ManualBTUs: 18, 000Heating Area: up to 450 sq. ft. Dimensions: 9.76"L x 19.09"W x 16.69"H Protective grill guard for safety Runs up to 4 hours on a single 1-lb. propane tank Equipped with built-in oxygen depletion sensor & tip-over shut-off mechanism | Camping World Comfort Gear 18,000 BTU Portable Propane Heater