Description: 21x10 1/2x3/4in. shelf
These are affordable, top quality, durable kiln shelves. Don't warp or crack. They contain 12% more alumina that regular cordierite shelves. The are good to cone 11. Not for  wood or salt firing.

KILN SHELVES 21" OR LARGER CANNOT BE SHIPPED UPS/FED EX. THEY MUST BE SHIPPED ON A PALLET OR PICKED UP!