RSF Onyx Focus 320 Brick Refractory – Front Right (FR-11.4.N)

USD $39.12

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SKU: FR-11.4.N Categories: , , ,

Product Description

This is an official genuine OEM RSF and RSF Energy Onyx Focus 320 Replacement Part.  This is a genuine RSF replacement refractory that ships new in original RSF packaging.

RSF Part Number: FR-11.4.N (replaces old part numbers R4204)

Applicable Models:

  • RSF Focus 320 Wood Fireplace
  • RSF Onyx Wood Fireplace
  • RSF Onyx 2 Wood Fireplace
  • RSF Onyx Wood Fireplace
  • RSF Onyx AP Wood Fireplace
  • RSF Energy Onyx Wood Fireplace

Please check the part number with your installation manual as it may work in other wood fireplaces as well.

Purpose: The firebricks are designed to protect the fireplace from warping. They also keep the heat in the fire to ensure a cleaner burn.

Installation tips: Make sure that you clean all the ashes out of the firebox. Use a vacuum (a shop vac with a drywall filter is best) to clean all the ashes out.

Other Notes: This is the price for each individual piece, if you want to replace both, you will need to order two. Do not use a household vacuum and make certain that there are no embers in the ashes before vacuuming. If you vacuum embers, you will risk having a fire in your vacuum.


This genuine RSF Onyx Focus 320 Brick is in stock ready to ship.

Shipping Dimensions

Weight 8 lbs
Dimensions 18 × 10 × 8 in

Replacement parts come with a 90 day warranty unless otherwise stated.

All Gas or Pellet components must be installed by a licensed technician.
All Gas or Pellet component warranty claims must include installation receipt to qualify for warranty.

Please contact Online Store Support with any warranty questions.


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