Search  for anything...
Lynn Manufacturing

Insulating Fire Brick, 2300F Rated, Single, 9" x 4.5" x 2.5", 3123P

    • Based on 249 reviews
Condition: New
Checking for product changes
$17.90 Why this price?

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Feb 25
Order within 4 hours and 7 minutes
Available payment plans shown during checkout

Size: 1 Single


Features

  • Great insulator with low thermal conductivity and very low weight
  • Easy to shape, cut, and carve with wood working tools
  • Used for kilns, forges, furnaces, knife making, PMC metal clay firing, jewelry casting, or jewelry soldering block
  • Specifications: 2300F rated, weight 2.1lbs., 9" x 4.5" x 2.5, alumina silica refractory ceramic clay brick
  • Well packed to ensure delivery in good condition

Material: Ceramic


Brand: Lynn Manufacturing


Color: Beige


Shape: Rectangular


Item Thickness: 2.5 Inches


Item Form: Bar" or "Rod


Item Weight: 1 Kilograms


Specification Met: Likely


UPC: 810527033531


Number of Items: 1


Package Dimensions: 12.91 x 5.2 x 3.31 inches


Item Weight: 2.2 pounds


Manufacturer: Lynn Manufacturing


Date First Available: October 27, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Feb 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Good product
Size: 4 Pack
Durable and easy to cut
Reviewed in the United States on December 17, 2024 by Thad Drietz
    • Insulating Firebrick
Size: 4 Pack
Have a very old kiln and the cover was broken. The firebricks replaced the broken firebricks and the lid works perfectly.
Reviewed in the United States on October 19, 2024 by Wendell
    • Works well.
Size: 12 Pack
Bricks work well. Edges crumble easily, however, but not enough to cause problems.
Reviewed in the United States on January 7, 2025 by DS
    • Great kiln brick
Size: 1 Single
The brick arrived on time and in great condition. Just what I need to soldering.
Reviewed in the United States on December 8, 2024 by Deitra Blackwell
    • Fire Brick
Size: 1 Single
Nice light weight fire brick. I use a torch to remove gaskets from from caps. It works great.
Reviewed in the United States on October 23, 2023 by S Weed
    • High temperature insulating brick for use atop wood patio deck under vertical propane smoke
Size: 4 Pack
Excellent insulating high temperature resistant quantity brick base for Masterbuilt 30 inch propane smoker that would normally have to sit atop wood patio deck. Installed fifteen (15) of these special bricks. Lightweight/high quality. Kept buying bricks from vendor to reach exact dimensions of the insulation area I needed. Vendor ships immediately and carefully packs product in bubble wrap to arrive in perfect condition. Brick actual dimensions and thickness are perfect for complete stable and washable insulating brick arrangement under smoker. ... show more
Reviewed in the United States on May 18, 2021 by Gman
    • Half of them arrived cracked
Size: 4 Pack
Every time we have ordered these, half of them arrived either cracked, or with corners completely broken off.
Reviewed in the United States on December 11, 2024 by Run
    • Use to absorb heat from microwave kiln
Size: 1 Single
I fuse glass in a microwave kiln. I put my kiln on this brick after it's been fired so my bench doesn't catch on fire. Used four times already and no issues!
Reviewed in the United States on May 30, 2022 by AK

Can't find a product?

Find it on Amazon first, then paste the link below.