

🔥 Build hotter, last longer — the pro’s choice in fire bricks!
This 12-piece set of insulating fire bricks, crafted from alumina and silica, offers precise 9" x 4.5" x 1.25" dimensions and withstands extreme heat up to 2300°F (1260°C). Lightweight yet durable, these bricks are perfect for ovens, kilns, forges, fireplaces, and blacksmithing projects, delivering reliable insulation and long-lasting performance at a competitive price.
| Brand | CFKJ |
| Item Thickness | 1.25 Inches |
| Manufacturer | CFKJ |
| Material | Alumina & Silica |
| Product Dimensions | 9"L x 4.5"W |
| Recommended Uses For Product | Insulation in high-temperature environments, use in ovens, kilns, forges, and fireplaces |
W**L
Fast Delivery, Good Quality & a Good Price!
The package was slightly hit on the bottom of the box and resulted in 1 brick being broken. It is Not a problem however, I needed a few half bricks anyways. The bricks are very lightweight and should be just right for closing one end of my forge off. A few others are for resting a piece of metal on the outside of the forge entrance, for stability & support of the longer pieces of steel, with an adjustable height roller stand. I think that these bricks are perfect for their intended usage & price. They should last a few years minimum. With care, who knows how long. I would recommend these bricks to others. They are a good weight, size & the price is right also! A broken one is understandable & not a problem. Note: The second picture is the bottom of the box that shows where the foam insulation board was broken. It only broke 1 brick and it's almost in the middle of the brick. So it's not a problem! I Still Give'em 5 stars! 👍
D**E
Good Stuff!
I was building a firewall for an MCM (Mid-Century Modern) fireplace, and these fit the bill. Used some heat-safe mortar and built a wall to protect the rear side of the fireplace. Had a few fires this fall, nothing too hot but they fit the build well and were priced good.
A**R
Awesome Fire bricks!! Great product!!!
I have used these in a open fire lump charcoal outdoor grill for 6 months. They work great, easy to install they are in the bottom of the grill subjected to intense heat. No issues what so ever! I do have a coal/grate pan underneath the grill grates for the charcoal. Helps to clean ash and coal residue. They are a bit brittle if you are rough with then but mine are laid on a level surface. Dont pound on them as they will break!! No hammers allowed lol. Highly recommend.
A**N
Outdoor Fire Pit
These worked great for our outside fire pit. We lined the bottom on top of the concrete to protect it from cracking. Then added lava rock on top. I use a single layer to go around the inside of the concrete retaining wall blocks. They break fairly easily by hand.
T**8
Pellet grill upgrade
I installed these in my old Traeger Texas Elite 34 pellet smoker. These have dramatically stabilized the temperature swings on my grill. I have used them in 20° temps with wind. I haven't noticed that it takes longer to heat the grill either. I use a smoke tube to get smoke, so it doesn't matter to me if the grill doesn't produce smoke through the auger cycling to compensate temps. It's a quality product that has many uses, including bbq year round.
B**I
High Quality Fire Brick
Received quickly and none of the bricks were chipped or cracked. We are using them in our woodstove and it's performing great.
K**N
they feel very lightweight
they feel very lightweight.... are they as durable as the heavier units that came with the wood stove? time will tell
J**B
Easy to work with.
Got these for the bottom of our fire pit. We haven't try yet but my husband placed them and Mortered them together. So we're ready to go. He said it was easy to do.
Trustpilot
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