GIRtech USM-5 Heavy Duty Fire Brick 2760F Pack of 5 Fire Bricks for Construction and Internal Lining Domestic Heating Units Fireplaces, Steel Furnaces, Wood Stoves, Ceramics Kilns, Blacksmith Forge

Bought these to replace a broken firebrick on the bottom of my forge, and to add additional for sliding doors on the front. Most of the hardware store bricks will only do up to 2200F, which isn't high enough. They'll crack and break within one or two firings. These bricks so far have held up to forge welding temps (no actual forge welding yet, so no word on how flux treats them). They extremely durable too. One out of the five came with a hairline crack in it, and even with it falling onto the ground from about 3ft up, it wasn't even phased and is still unbroken (it's one of the doors right now).All in all, these bricks are strong, hold up to the heat, and are priced equally to the hardware store bricks that don't meet the same temps. Worth every penny. Only shame is that my first order of them went missing after customs, so this is technically the second batch. Seller refunded the first order quickly though, so everything has been great on this end.

High quality replace bricks for my wood stove. Very pleased with the final result. Thanks.

Nice heavy brick to retain heat. I replaced all the bricks in my blazeking woodstove and these are about twice as heavy as the original ones. The bricks arrived on time and were packaged good enough that none of them were broken, kinda surprised as I live in interior alaska and you never know how it's going to with shipping up here.

I bought these to replace the bricks in my wood stove. They fit but I had to trim two stones on the side. About 1/16 to wide. You'll need a masonry blade to cut them there well made.

4 bricks were broken out of 10. Returned one pack. It would be OK if I had to replace horizontal bricks, but I need to replace vertical. Bad packing and/or handling. Otherwise I liked the product.