Best 40 Inch Fire Pit Ring Inserts for DIY Outdoor Fire Pits
Explore top-rated 40-inch fire pit ring inserts designed for DIY builds, above-ground pits, or underground setups. These rings reinforce safety, improve airflow, and extend burn time for outdoor gatherings. Each option supports 36-inch inner diameters, offering ample space for wood and fuel while maintaining a tidy, low-smoke burn.
| Product | Diameter (Outer) | Diameter (Inner) | Material | Use |
|---|---|---|---|---|
| SoulMate Outdoor Ring | 40 inches | 36 inches | Solid steel | Above-ground or underground DIY pits |
| 36 Inch Inner/40 Inch Outer Ring | 40 inches | 36 inches | 1.5 mm steel, matte black coating | Outdoor fire pits, ground or dug pits |
| Koutemie Smokeless Ring | 40 inches | 36 inches | Solid steel | Above-ground or in-ground DIY pits |
| VAMFUTRE Large Ring | 6 ft (72 inches) | 6 ft (72 inches) | Galvanized steel, 0.7 mm | Large outdoor pits, camping, patios |
| INNOSTAGE 36 Inch Ring | 40 inches | 36 inches | 0.9–1.5 mm Q235 steel | DIY camping pits, inground or above ground |
Below are five solid choices that align with a 40-inch outer diameter and 36-inch inner diameter, offering strong construction, good airflow, and versatile installation options for both above-ground and underground configurations.
SoulMate 40-Inch Outer/36-Inch Inner Fire Pit Ring
The SoulMate fire pit ring insert is designed for easy installation with an eight-piece kit. It features a seamless design and screw-based fastening to prevent detachment during use. Its top ventilation holes improve airflow for thorough wood combustion, reducing smoke and improving overall burn efficiency. The ring supports both above-ground and underground configurations, making it a flexible option for DIY projects where ground protection is necessary. Ground preparation may involve bricks, stones, or sand to protect the surface beneath.
36 Inch Inner Ring for Outdoor Fire Pits
With a 1.5 mm thick steel construction and matte black high-temperature coating, this ring emphasizes durability and safety. The outer diameter is 40 inches, with a 36-inch inner space to accommodate substantial wood loads. Its curved edges minimize scratching and ensure a user-friendly setup. Suitable for ground installation or embedding within a custom enclosure, the product aims to deliver sturdy performance for long-term outdoor use while allowing flexible DIY layouts.
Koutemie Smokeless Fire Pit Ring Liner
The Koutemie ring emphasizes airflow with a top circle of ventilation holes, designed to boost wood combustion and minimize smoke. It’s manufactured from heat-resistant steel to withstand high temperatures and prevent ash from leaking through. The large 40-inch outer diameter and 36-inch inner diameter provide ample space for extended fires, ideal for parks, patios, or backyards. It is suitable for both above-ground builds and in-ground installations, offering flexible customization options for DIY enthusiasts.
Large Metal Fire Pit Ring — 6 Ft Diameter
This oversized ring is designed for very large gatherings, supporting 7–12 people around a spacious 6-foot diameter pit. The ring stands about 1 foot high and uses 0.7 mm galvanized steel for durability. Its size makes it suitable for patios, backyards, or camping sites where a generous fire pit ring is desirable. The design prioritizes stability and outdoor resilience, making it a practical option for expansive outdoor entertaining spaces.
INNOSTAGE 36 Inch Fire Pit Ring (40 Inch Outer)
INNOSTAGE offers a pro-grade steel construction with 0.9–1.5 mm Q235 steel and high-temperature paint rated to 600°C+. The 40-inch outer diameter accommodates elaborate stone or brick surrounds, making it a strong candidate for an inground or freestanding installation. The 36-inch inner diameter provides a comfortable space for wood and fuel while maintaining a tidy burn area, suitable for large family gatherings or camping trips. It weighs in at roughly 17.58 pounds, which supports stable, durable performance.
Buying Guide
Key considerations when choosing a 40-inch fire pit ring insert include material quality, installation method, ventilation, and intended placement. Durability matters: look for steel rings with protective coatings that withstand high temperatures and outdoor weather. Ventilation holes at the top help encourage efficient combustion and reduce smoke, particularly important for gatherings where comfort is a priority. For underground installations, ensure there is a plan to protect ground surfaces (sand, stones, or a base layer) to avoid ground damage.
Installation ease varies by kit. Some rings ship with an eight-piece assembly and screw fittings for quick setup, while others require more hands-on customization. Consider whether you plan to place the ring on the ground or bury it to form an underground pit. If burying, ensure the bottom is supported by a stable base and that there is enough clearance for airflow and safe ash containment. For larger venues or campgrounds, a 6-foot ring provides ample capacity but requires a sturdy base and clear site planning.
Compatibility is another factor. Outer diameter should align with your pit surround dimensions, while inner diameter should accommodate the amount of wood you intend to burn. If you expect heavy, long-burning fires or high-heat cooking, choose a thicker steel construction and high-temperature coatings. Finally, consider maintenance: a design that minimizes ash accumulation and allows easy cleaning will save time and effort after use.