Heavy Duty Refractory Fire Bricks - Interlocking & Straight Styles

Perfect for backyard pizza ovens, metalworking forges, and industrial furnace repair.

Bricks are available in 2 styles and multiple lot sizes to fit any high-heat build. Choose from large interlocking tongue-and-groove liners—ideal for mortarless kiln walls and structural bases—or standard dense straight bricks for classic masonry and forge applications.

Style: Tongue-and-groove interlocking liner

• Dimensions: Approx. 12" L x 9" W x 2.5" H (9.5" W including tongue)
• Weight: Approximately 18 to 22 lbs per brick
• Applications: Mortarless walls, heavy load-bearing floors, kiln bases
• Markings: Stamped "158"

Style: Straight Bricks

• Style: Standard straight dense refractory brick
• Dimensions: Approx. 9" L x 4.5" W x 2.38" H
• Weight: Approximately 7.4 lbs per brick
• Applications: Classic masonry, forges, standard furnace repair

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