The Obelisk

The Obelisk 41,000 BTU standing propane. 13 ft warming circle. Runs ~10 hours on a 20-lb tank. We’ll say it before you do Every 41,000 BTU standing propane patio heater at this size makes roughly the same 13-ft warming circle and burns through a 20-lb tank in about ten hours. What actually differs is the finish (this one is faux-stone concrete over magnesium oxide, most are painted aluminum that scratches in year two), the wheels (four lockable universal casters plus four adjustable feet plus four ground fixers here, versus the two-wheel tippy versions), and whether the propane tank sits INSIDE the base behind a door or is a visible cylinder wrapped in a cover. What actually differs 41,000 BTU heat output — heats a 13-foot diameter circle at real seating height Faux-stone concrete finish over magnesium oxide — reads like a stone garden pillar, holds up in weather, doesn’t chip like painted aluminum Double tempered glass shields on all four sides — you see the flame, not a wire cage Stainless steel burner plus flame-out protection (auto-shuts the gas if the flame blows out) Metal hood on top reflects heat down onto seated guests instead of losing it upward 20-lb propane tank sits INSIDE the base — closed hinged access door hides the tank completely; no visible cylinder 4 universal wheels (2 lockable) plus 4 adjustable feet plus 4 ground fixers — rolls smoothly, locks in place, stays level on uneven flagstone Waterproof PVC cover included — fits over the whole unit for storage Push-button piezo ignition — no batteries, no lighter CSA certified for outdoor commercial and residential use Perfect for The backyard patio that finally has furniture but nobody uses past October Restaurant and cafe patios that want extended outdoor seating into December Airbnb rentals where the deck is the selling point but goes cold at 6 pm Fire-code communities where a real firepit is banned but propane heat is allowed Deep decks over the garage where indoor heat can’t reach Specifications Heat output 41,000 BTU Warming diameter ~13 ft (360°) Fuel Standard 20-lb propane tank (not included) Runtime per tank ~10 hours on high Overall dimensions 15.5″ W × 15.5″ D × 62″ H Hood dimensions 13.5″ × 13.5″ Glass flame chamber 15.5″ square × 29.5″ tall Tank compartment door 14″ × 19″ (hinged) Weight ~104 lbs Housing Magnesium oxide with faux-stone concrete finish, stainless steel burner, double tempered glass, dark metal hood Ignition Piezo push-button (no batteries) Certification CSA Listed, outdoor use only Safety cutoffs Flame-out protection, tank securing ring, excess flow valve Mobility 4 universal wheels (2 lockable), 4 adjustable feet, 4 ground fixers What is included One Obelisk standing propane patio heater Waterproof PVC storage cover 4 universal caster wheels (2 lockable) 4 adjustable leveling feet 4 ground fixers for extra stability Instruction manual with ignition and assembly steps 20-lb propane tank NOT included. Standard exchange or new-fill tanks at any hardware store, Blue Rhino/Amerigas exchange location, U-Haul, or gas station for USD 20-25. What it cannot do Not for indoor use. Designed for open-air outdoor use only, not enclosed rooms. Covered outdoor patios, pergolas, gazebos with open sides — fine. Enclosed rooms with the windows closed — no. Not something to leave running unattended. Always turn off the tank valve when you go inside. Not for the whole yard. 41,000 BTU warms a 13-ft diameter circle at real seating height. It heats the chairs pulled up close to it. A hundred-foot lawn party needs several heaters, not this one alone. Not for high winds. Sustained wind over 15 mph will blow out the flame — the flame-out sensor auto-shuts the gas, but you lose heat. Store the unit under the cover on windy nights. Not lightweight. 104 lbs with an empty tank. The wheels help but this isn’t something to carry up steps. Fully assembled from the factory.