https://www.openlearning.com/u..../combswang-sllcbw/bl
Gas Fired Patio Heaters Gas fired patio heaters are increasingly popular for residential and commercial outdoor spaces. They are typically free-standing with a reflector dome or shield to direct radiating heat downwards. They are usually connected to a gas line and eliminate the requirement for propane tanks, reducing operating costs. However they aren't as portable than propane models and are susceptible to damage by strong winds. Efficiency Patio heaters are kn
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