Are these safe for food? In a grill?

you might use them in the construction of the grill, like if you're building your own yakitori grill, but I dont think you allow the food to touch or cook on the bricks

Is there any firebrick and mortar I can buy that can tolerate 3,800°F-6,000°F?

They are industrial grade firebrick these will not work for that application

measurement of the bricks. 9X4&1/2?

Yes, they measure 9" by 4.5" by 1.25". They are identical to the original fire bricks in my Vermont Castings Defiant wood stove. My stove is 9 years old.

What is the best way to join these together?

Your best bet to join these bricks would be to use a refractory mortar, such as the Rutland Fireplace Mortar. If outdoors, you will need to use the Rutland Castable Refractory Cement.

Fire Brick | Desertcart UK

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Description

🔥 Build with the best—because your fire deserves bricks that never quit!

DISTINCTIVE TAN COLOR - Avoid the pink imposters—our tan bricks signal superior curing and reliability you can trust.
PRECISION ENGINEERED FIT - Consistent sizing with minimal color variation ensures seamless installation and a flawless finish every time.
TRUSTED BY PROFESSIONALS - Highly rated by thousands, these fire bricks outperform original OEM parts for your fireplace or stove.
UNMATCHED HEAT RESISTANCE - Certified to withstand extreme temperatures up to 2700°F, far exceeding residential standards for ultimate durability.
PREMIUM AMERICAN CRAFTSMANSHIP - Proudly manufactured in the USA with rigorous quality control to deliver non-brittle, long-lasting fire bricks.

Rutland Products Fire Brick offers a premium, tan-colored firebrick engineered for extreme heat resistance up to 2700°F. Manufactured in the USA with strict quality control, these 9" x 4.5" x 1.25" bricks provide precise sizing and durability, ensuring superior performance and easy installation. Trusted by professionals and highly rated by users, they deliver reliable, long-lasting protection for fireplaces and stoves.

Specifications

ASIN	B000UEYZ4S
Best Sellers Rank	#275,263 in Toys & Games ( See Top 100 in Toys & Games ) #30 in Walls & Brickings #14,526 in Remote & App-Controlled Toys
Brand	RUTLAND PRODUCTS
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 2,744 Reviews
Enclosure Material	Clay" or "Ceramic
Global Trade Identification Number	00022624006046
Included Components	6 pk
Item Form	Tan Fire Bricks
Item Type Name	Rutland Products Fire Brick
Item Weight	24.1 Pounds
Manufacturer	Rutland Products
Manufacturer Part Number	604
Manufacturer Warranty Description	This product will be free from defects in material and manufacture for a period of eighteen (18) months from date of manufacture. Rutland fire clay company makes no other warranties including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. User is responsible for determining whether the rutland fire clay company product is fit for a particular purp…
Material	Clay" or "Ceramic
Model number	604
Scent	Unscented
UPC	012685000053 022624006046
Unit Count	6.0 Count

Reviews

M**R

Great product, better than original bricks my Blaze King came with

20.01.2023

J**E

Easy installation

19.04.2020

J**E

Performs as advertised

1.09.2020

G**F

Osborn 2400 firebricks replacements

26.01.2026

T**S

Nice product, easy to install.

11.01.2026

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