mocomax 40" Smokeless Fire Pit Ring — 36" Inner Octagonal Steel Liner, Ventilated for Cleaner Burning

Designed for backyard gatherings, camping setups and DIY fire pit projects, the mocomax 40-inch smokeless fire pit ring combines a distinctive octagonal shape with drilled ventilation to encourage efficient combustion and reduced smoke. Constructed from thick steel with a high-temperature coating, this liner is built to handle intense heat while giving you a large 36-inch inner fire bed that’s easy to assemble and maintain. The ring works as a stand-alone above-ground pit or as an in-ground liner for a permanent installation.

How does the octagonal shape affect flame performance?

The octagonal profile changes how wood stacks and how air circulates around the fire, helping flames breathe more steadily than a plain circular ring. Edges create small air channels and the angled sides reflect heat outward, producing a warmer seating area. The design also looks more architectural in outdoor living spaces.

• Eight flat faces improve log placement and stability.
• Angled sides reflect heat toward guests for better warmth.
• Distinctive silhouette enhances patio or campsite aesthetics.

Will this fire pit actually reduce smoke and improve burning?

Ventilation holes around the ring introduce oxygen where it’s needed, supporting more complete combustion and cutting down on heavy, acrid smoke. While not a guarantee of zero smoke under every condition, the drilled vents and open 36" fire bed help wood burn more evenly and with fewer smoldering pockets. Properly seasoned fuel and good airflow will yield the best results.

• Perforated sides enhance oxygen flow to the fire core.
• Large inner diameter accommodates bigger logs for cleaner flames.
• Designed to minimize smoldering that creates excess smoke.

What materials and heat limits does the liner use for lasting performance?

The fire ring is fabricated from durable steel and finished with a high-temperature coating to resist oxidation and wear from repeated heating cycles. It’s engineered to tolerate very high temperatures typical of wood fires, so it maintains structure and safety across many uses. Regular cleaning and avoiding corrosive chemicals will extend its life.

• Thick steel construction resists warping under heat.
• Heat-resistant coating helps prevent rust and surface damage.
• Rated to withstand high-temperature wood fires when used as intended.

How simple is assembly and where can I use it?

Assembly is straightforward—this liner ships with clear instructions and bolts together quickly so you can spend less time building and more time enjoying the fire. With an 8.5-inch height, 36-inch inner diameter and 40-inch outer diameter, it’s sized for family gatherings yet portable enough for seasonal storage. Install above ground on a fire-safe surface or recess the ring into a dug pit for a permanent look.

• Quick bolt-together assembly with included instructions.
• Fits common backyard patio spaces and campsite clearings.
• Works as an above-ground portable pit or an in-ground liner.

Who is this for: The mocomax octagonal fire pit ring is ideal for homeowners, DIY landscapers and campers who want a large, durable fire bowl that improves airflow and gives a distinctive look to outdoor spaces. Choose it if you want a steel liner that’s straightforward to install, handles substantial wood fires, and elevates the aesthetic of a patio, garden, or campsite without complicated assembly.