Grooved Bottom Brick Vcella TL60 18 X 9 X 3) (5 grooves)

Grooved Bottom Brick Vcella TL60 18 X 9 X 3 (5 grooves)

Large IFB with 3 element grooves for Top.

Sold by the single brick

4 top & 4 bottom brick per furnace (bottom 5 grooves).