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 *~ Local Pick-Up or Freight Shipping Only ~*