Sienna fire pit: a 38-inch domed concrete bowl on a small pedestal foot
The Outdoor Plus Sienna fire pit is a round bowl, 38 inches across and 19 inches tall, with wide domed sides that taper to a small 18 inch foot. Made in the USA from glass fiber reinforced concrete, it looks like stone at a fraction of the weight and comes in 18 colors.
Order it for natural gas or propane. Light it with a match, or add electronic ignition and start it with a button. The 21 inch stainless pan, burner, and hoses are included; a key valve, canvas cover, stainless lid, bullet burner, fire glass, and ornaments are optional. Prefer a straight-sided drum? See the Florence 32-inch fire pit. The Sienna fire pit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Specifications
Sienna Fire Pit – Specification Sheet
SKU: OPT-RF37
| Color |
Ash (-ASH), Black (-BLK), Bronze (-MBR), Brown (-BRN), Chestnut (-CST), Chocolate (-CHC), Coffee (-RCF), Copper (-MCP), Limestone (-LIM), Moss Stone (-RMS), Natural Gray (-NGY), Pearl (-MPR), Rustic Gray (-RGR), Rustic White (-RWH), Silver (-MSV), Slate (-MSL), Smooth Gray (-GRY), Vanilla (-VAN) |
| Ignition Type |
Match Lit Ignition, Match Lit with Flame Sense Ignition (LC Certified), Flame Sense With Spark Ignition, Low Voltage Electronic Ignition (CSA Certified), Plug and Play (CSA Certified) |
| Gas Type |
Liquid Propane, Natural Gas |
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.