K23 insulating fire bricks for sale

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Atlas Knife Company

Atlas Knife Company

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Any interest in arch shaped K23 insulating firebrick? I just picked up over 800 bricks, and only need 400-500. They are arch shaped, measuring 9" long, 4½" tall, 2 7/16" on the base and 1 13/16" on the top. Here's a picture to explain the shape. Think of a trapezoid. Two bricks together measure 9 x 4½ x 4¼. Cut one in half and and you have two end pieces to square them off with.
firebrick.jpg

OK, I thought some were missing corners, but I haven't seen seen any lately. I will ship the best ones since I don't need the corners anyway. These are the softer bricks that only weigh 1 lb. 8 oz. each. They are Harbison Walker and are at least 10 years old, because they were in a barn for the last 10 years. I will be reboxing these in boxes of 4 and 12.

Asking $20 per box of 4 shipped
Asking $50 per box of 12 shipped

bricks.jpg
 
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I can also fit 4 bricks in a medium flat rate box. I would sell these for $20 shipped if anyone is interested. That's $5 per brick, shipped. If you cut them in half and stack them, you get a nice 4½ x 4½ x 4¼ cube shaped block that you can hollow out. Two bricks together would give you 8½" long, you could hollow out a 2½" chamber and still have nice 1" walls.
 
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