The SRP Series GRT two-stage garage heater high thermal efficiency and radiant output provides maximum energy savings and comfort for your garage and workshop all year round and eliminates condensation that can damage your tools. New HI/LO capacity allows for quick recovery and economical steady operation. Features Natural Gas and LPG Two-stage configuration input rate high 45,000 and low 30,000 BTU/h Hi/Lo indicator lights Smart control ready terminal Redesigned reflector with integrated deco grille Thermal efficiencies above 82% Includes 8' horizontal vent kit Gas flex connector included Includes ceiling mounting bracket * Vertical vent kit optional Direct spark ignition Self-diagnostic ignition module Preassembled construction - no loose parts, simplified installation. Balanced flue construction - one wall opening, maximum safety, minimum installation cost Approved to residential standards - AGA Reg. 7-89, CAN/CGA 2.5-M86. CSA approved for outdoor use