Firebrick Replacement Zoom

Osburn Part Firebrick 4'' X 9" X 1 1/4" HD

29011

Status: In Stock

US$12.99

Description

Description

The Osburn Firebrick, part number 29011, is a high-density replacement refractory firebrick measuring 4 inches by 9 inches by 1-1/4 inches for use in compatible Osburn wood stoves and inserts. The firebrick is an OEM SBI component used as a bottom and side refractory lining brick across multiple SBI wood stove and insert models, protecting the firebox body from direct combustion temperatures and contributing to more even heat distribution during the combustion cycle.

The refractory panels and bricks are designed to protect the firebox from warping while keeping heat concentrated within the fire for a cleaner and more efficient burn.

The 29011 firebrick differs from the 29020 brick in its width dimension — the 29011 measures 4 inches wide compared to the 4-1/2-inch width of the 29020 — making the two bricks dimensionally distinct and not interchangeable within firebox lining configurations that specify one over the other.

Firebricks in wood stove fireboxes are subject to sustained high combustion temperatures, repeated thermal cycling, and mechanical contact during wood loading and ash removal, all of which cause gradual cracking, chipping, and surface deterioration over time.

Replacement of damaged or deteriorated bricks restores the firebox lining to its intended configuration and prevents direct heat exposure to the underlying firebox steel body. Compatibility with a specific stove model should always be confirmed against the owner's manual parts list before installation.

What's Included: One Osburn high-density refractory firebrick, part number 29011, measuring 4 inches by 9 inches by 1-1/4 inches for use as a bottom or side firebox lining brick in compatible Osburn wood stove and insert models.

Installation Limits: Firebrick installation and replacement must be performed only when the stove is fully cooled. The stove must not be operated with missing or severely damaged firebrick lining. Water must never be introduced to hot firebricks as thermal shock will cause cracking. Compatibility with a specific model must be confirmed against the owner's manual part number listing before installation.

Compatibility: Compatible with Osburn and other SBI-manufactured wood stove and insert models that specify the 29011 part number in their firebox brick lining. Compatibility should be confirmed against the owner's manual for the specific appliance model being serviced.

Features

Features

  • High-density replacement refractory firebrick measuring 4 inches by 9 inches by 1-1/4 inches for use as a bottom or side firebox lining brick in compatible Osburn and SBI wood stove and insert models
  • OEM SBI part used across multiple SBI wood stove, insert, and fireplace models under the Osburn, Drolet, EnerZone, PSG Caddy, and Century brand names
  • Protects the firebox steel body from direct combustion temperatures and helps prevent firebox warping during sustained high-temperature operation
  • Keeps heat concentrated within the firebox during combustion to support a cleaner and more efficient burn across the operating range of the appliance
  • Dimensionally distinct from the 29020 firebrick which measures 4-1/2 inches wide — the 29011 at 4 inches wide is not interchangeable with models specifying the wider brick
  • Compatibility with a specific stove or insert model must be confirmed against the owner's manual part number listing before installation

Specifications

Specifications

Part Number: 29011
Brand: Osburn
Manufacturer: Stove Builder International (SBI)
Part Type: High-Density Refractory Firebrick
Brick Length: 9 inches
Brick Width: 4 inches
Brick Thickness: 1-1/4 inches
Application: Bottom and Side Firebox Lining — Compatible Osburn and SBI Wood Stoves and Inserts

 

The Osburn 29011 Firebrick is a high-density OEM SBI replacement refractory firebrick measuring 4 inches by 9 inches by 1-1/4 inches, used as a bottom and side firebox lining component across compatible Osburn, Drolet, EnerZone, and other SBI wood stove and insert models to protect the firebox body from combustion temperatures and support cleaner, more efficient burning.

 

Support

Support

 
Product FAQ

What is the difference between the Osburn 29011 and 29020 firebricks?

The primary dimensional difference between the 29011 and 29020 firebricks is their width. The 29011 measures 4 inches wide by 9 inches long by 1-1/4 inches thick, while the 29020 measures 4-1/2 inches wide by 9 inches long by 1-1/4 inches thick. The half-inch width difference makes the two bricks dimensionally distinct and not interchangeable in firebox lining configurations that specify one size over the other. The correct brick for a specific stove or insert model must be confirmed against the owner's manual parts list to ensure the proper dimensional specification is used.

What role do firebricks play in wood stove and insert performance?

Firebricks serve two key functions in a wood stove or insert firebox. They protect the steel firebox body from direct exposure to combustion temperatures, preventing the warping and accelerated degradation that would result from unprotected steel contact with sustained high heat. They also add thermal mass to the firebox interior, concentrating heat within the combustion zone to support a more complete burn of the wood fuel. This combination of protective and thermal performance functions contributes to the stove's overall efficiency and the cleanliness of its combustion output.

Which brands and stove models use the Osburn 29011 firebrick?

The 29011 is an OEM SBI part used across multiple wood stove and insert models manufactured by Stove Builder International under its various brand names including Osburn, Drolet, EnerZone, PSG Caddy, and Century. Before using the 29011 brick as a replacement in any specific model, compatibility must be confirmed against the owner's manual parts list for that appliance to verify the 29011 is the correct dimensional specification for the firebox lining configuration of the model being serviced.

When should the 29011 firebrick be replaced in an Osburn wood stove?

The 29011 firebrick should be replaced when it develops cracks that extend through the full thickness of the brick, when sections have broken away leaving the underlying firebox steel exposed, or when surface deterioration has progressed to the point where the brick no longer provides adequate protection to the firebox body. Surface cracks and minor chips that do not penetrate fully through the brick thickness do not necessarily require immediate replacement, but firebox lining condition should be inspected regularly and any brick showing through-cracks replaced before continued operation of the stove.

What precautions must be taken when replacing the 29011 firebrick?

All firebrick replacement must be performed only when the stove or insert is fully cooled to ambient temperature. Contact with the firebox interior or any internal component while the appliance retains heat from recent operation poses a severe burn hazard. The appliance must not be operated with missing or severely damaged firebrick lining, as unprotected firebox steel exposed to combustion temperatures will accelerate firebox body degradation. Water must never be introduced to hot firebricks during cleaning or service, as the resulting thermal shock will cause brick cracking regardless of the brick's prior condition.

Is the Osburn 29011 firebrick an OEM part or an aftermarket substitute?

The Osburn 29011 is an OEM SBI part manufactured by Stove Builder International and shipped in original SBI packaging. It is not an aftermarket copy or substitute product. Using the OEM SBI firebrick ensures the correct dimensional specification, material density, and refractory composition required by the firebox lining design of compatible SBI-manufactured appliances, and supports proper fit within the firebox without modification or adjustment to the brick or surrounding lining components.

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