Standing 90 in tall on a slim 19.5 in square base, this pyramid heater takes up very little floor space for the amount of warmth it returns. A stainless steel burner produces 42,000 Btu and sends it out in a full 360 degree pattern, so where people stand around the column makes almost no difference to how warm they feel. A reflective cover at the top catches heat that would otherwise escape upward and radiates it back down across the seating. Below it, the flame climbs a glass tube, which gives the patio a moving light source as well as a heat source and turns the heater into a natural gathering point after dark. Three safety systems work in the background: tip-over protection, flameout protection and anoxic protection, all backed by Csa certification. Starting it is a matter of pressing the igniter button, and a variable heat control knob handles adjustment from there. On first use or after a cylinder change, hold the control knob in for two minutes to purge air from the gas line. At 48.5 lbs the heater rolls on built-in wheels whenever the seating gets rearranged, and it runs on a standard 20 lb propane tank. An Aa battery and full instructions are included.