Insulating Fire Brick, 2300F Rated, 4-Pack, 9" x 4.5" x 2.5", 3123R

Have a very old kiln and the cover was broken. The firebricks replaced the broken firebricks and the lid works perfectly.

The brick arrived on time and in great condition. Just what I need to soldering.

Durable and easy to cut

Nice light weight fire brick. I use a torch to remove gaskets from from caps. It works great.

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.

Packaged with each brick in a separate cardboard enclosure and delivered in two days by UPS, no bricks were broken. Since it was raining UPS even brought the two heavy boxes around to the back door porch to keep them dry. Bricks are perfect for a lost wax burn out oven I'm building.

Every time we have ordered these, half of them arrived either cracked, or with corners completely broken off.

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!