The Outdoor Plus Sienna Fire Pit – GFRC Concrete

FAQ

What is the appeal of a one-size fire pit like the Sienna?

Certainty. The Sienna comes in a single, right-sized format (OPT-RF37) and pours its variety into finish instead — 18 hand-applied GFRC colors. Cast in glass fiber reinforced concrete, it delivers stone presence at a manageable weight, handmade in the USA and ready to disappear elegantly into almost any patio scheme.

Which colors can I choose?

Eighteen, spanning the neutral spectrum: Ash, Black, Bronze, Brown, Chestnut, Chocolate, Coffee, Copper, Limestone, Moss Stone, Natural Gray, Pearl, Rustic Gray, Rustic White, Silver, Slate, Smooth Gray, and Vanilla. The Sienna in Limestone or Vanilla brightens shade; Slate and Black anchor light-colored hardscape.

What are the fuel and ignition choices?

The Sienna is built to order for Liquid Propane or Natural Gas, with five ignition systems available: Match Lit, Match Lit with Flame Sense (LC certified), Flame Sense with Spark, Low Voltage Electronic (CSA certified), and Plug and Play (CSA certified). Unpowered simplicity through fully electronic — your call.

How much heat should I expect?

Enough to matter. Gas flame burns beyond 1,000 degrees at the source, and the Sienna radiates a comfortable envelope for the seating pulled up around it. The key valve is the dial: low flame for ambiance and long conversations, high for chilly shoulder-season nights.

Do backyard rules allow a unit like this?

In most towns, gas fire features clear the bar easily — the Sienna makes no smoke or embers, so wood-burning bans typically do not apply. Check clearance requirements and any HOA fine print, have a licensed installer handle the gas line, and you are done with bureaucracy.

What is the fuel consumption like?

Driven by flame height, nothing else. The Sienna at a modest setting runs a 20-pound propane tank across several evenings; on natural gas the per-hour cost is small change. If economy matters, run lower flame — the concrete bowl looks just as good either way.

Is a rug under the Sienna fire pit safe?

Keep the rug out from under it. Heat pooling beneath the Sienna base and radiating off the rim is more than outdoor rugs are rated for. Set it on pavers, stone, or concrete — the way every concrete fire pit prefers — and let rugs frame the seating instead.