Rasmussen FRB Fire Pit Ring Burners – Stainless Steel or Black Iron Round Burner Rings for Natural Gas Fire Pits (12"–36")

The Rasmussen FRB Fire Pit Ring Burners are heavy-duty round burner rings designed specifically for natural gas outdoor fire pits. Available in multiple diameters from 12" to 36", these single- and double-ring burners deliver a full, even flame pattern across round fire bowls, making them ideal for custom-built fire pits in backyards, patios, and commercial spaces.

Choose between stainless steel (FRB-S) and black iron (FRB-B) construction. Both are built from ½" Schedule 10/40 piping with a center inlet and ½" FIP threads and plug, engineered for long-lasting performance in demanding outdoor conditions. Stainless steel offers superior corrosion resistance, while black iron provides a durable, value-focused option.

The FRB ring burners are match-light only, with precision-drilled burner ports for consistent flame height and distribution. When installed with the ports facing down and covered with approximately 2" of volcanic ash or similar media, they create a stable platform for Rasmussen fire pit logs, FireBalls, FireShapes, or FireStones while promoting longer media life and a softer, more natural flame presentation.

Whether you’re building a small, intimate fire feature or a large entertainment focal point, Rasmussen FRB ring burners give you a proven, professional-grade foundation for your gas fire pit.

Specifications

• Product Name: Rasmussen FRB Fire Pit Ring Burners

• Series: FRB – FireRing Burner series

• Application: Round vented natural gas outdoor fire pits, match-light systems only

Sizes & Ring Configuration

• 12" Diameter – Single ring

• 18" Diameter – Single ring

• 22" Diameter – Double ring

• 24" Diameter – Double ring

• 30" Diameter – Double ring

• 36" Diameter – Double ring

Materials & Construction

• Piping: ½" round pipe

  • Stainless Steel version: ½" Schedule 10 stainless steel (FRB-S)

  • Black Iron version: ½" Schedule 40 black iron (FRB-B), painted black

• Inlet: Center inlet with ½" FIP threads and plug

• Burner Ports: Drilled ports for consistent flame pattern

Fuel & Ignition

• Fuel Type: Natural Gas only

• Ignition: Match-light (requires external flame source to light)

Installation Requirements

• Install burner with holes/ports facing down

• Cover with approximately 2" of volcanic ash or similar media to:

  • Create a level platform for logs, FireBalls, FireShapes, FireStones, or glass

  • Help diffuse the flame and promote longer media life

• For use in properly sized and ventilated round fire pits that meet local codes

Recommended Media & Pairing

• Compatible with:

  • Rasmussen FP Series fire pit logs

  • Rasmussen FireBalls, FireShapes, FireStones, and glass media (when installed per manufacturer guidelines)

Origin

• Made in the USA (per manufacturer/retailer specs)

Key Features & Benefits

• Designed for Round Outdoor Fire Pits
  FRB ring burners are specifically engineered for round fire bowls, providing a more even, full-circle flame compared to straight tube burners in circular pits.

• Choice of Stainless Steel or Black Iron

  • Stainless Steel (FRB-S): Maximum corrosion resistance and long-term durability in harsh climates.

  • Black Iron (FRB-B): Heavy-duty, cost-effective solution with robust Schedule 40 construction.

• Single and Double Ring Options
  Smaller sizes (12", 18") feature a single ring for compact pits, while larger sizes (22"–36") use a double ring design to spread flame and heat more evenly across wider bowls.

• Heavy-Duty Construction for Long Life
  Built from Schedule 10/40 piping with a central inlet, these burners are made to handle high BTUs and regular outdoor use without warping or premature failure.

• Clean, Consistent Flame Pattern
  Precision-drilled ports help create an attractive, uniform flame pattern that looks great under logs, FireBalls, or decorative stone media.

• Ideal Foundation for Rasmussen Fire Media
  Designed to work with Rasmussen’s FP Series fire pit logs and alternative media lines like FireBalls and FireStones, giving you a flexible platform to build your preferred fire pit look.

Why Choose This Product

Choose Rasmussen FRB Fire Pit Ring Burners if you’re building a custom round gas fire pit and want a burner that’s been proven in real-world installations for years.

Compared with generic burner rings, FRB burners offer:

• Verified sizing and performance for 12"–36" round pits

• A choice of stainless or black iron to match budget and environment

• Thoughtful design for use with volcanic ash and premium fire media

• A brand with a long history in gas logs and fire pit components, known for quality and support

For homeowners, that means your fire pit is built on a reliable, well-engineered burner that delivers a beautiful flame and solid performance. For installers and designers, the FRB series is spec-friendly and consistent, making it easy to design, quote, and install round fire features that perform as expected.

Deliver Results with Love

A great fire pit starts with a dependable burner and the Rasmussen FRB Fire Pit Ring Burners are designed to quietly do that job, season after season. Once installed, they disappear beneath your lava, glass, or log display, leaving nothing but a warm, even flame for people to gather around.

By choosing an FRB ring burner, you’re investing in durability, safety-conscious design, and a professional flame presentation that shows you care about how your outdoor space looks and feels. The sturdy construction, natural gas compatibility, and compatibility with premium media all come together to help you build a fire feature that’s not just functional, but truly inviting.