Dome: A very critical feature not to Dreo Space Heater be overlooked on any heater is the way the "dome" is built. A heater "dome" with a massive diameter distributes warmth more successfully than smaller domed warmers. The majority of patio warmers are single domes. However, Endless Summer by the way of Blue Rhino, does provide a triple domed business patio heater. https://www.healthmassive.com/dreo-space-heater/