The Sunpak 34,000 BTU Natural Gas Heater is the perfect way to add comforting warmth to your outdoor space and outdoor entertainment gatherings. Designed for both residential and commercial opportunities, this streamlined heater fits the bill for virtually any need. Capable of warming areas up to 144 Sq. Ft. in size with up to 34,000 BTUs of comforting heat, this powerful unit uses natural gas to keep your guests toasty warm. This unit installs with ease and has a suggested mounting height between 9.5' - 12'. Sunpak heaters are unvented and require a continuous supply of fresh air and proper ventilation to ensure safe operation. These units CANNOT be used in any indoor or enclosed area. Proudly made in the USA, this durable heater is sure to provide years of use for your family or guests.