Description: 21x3/4in.  full round shelf
These are affordable, top quality, durable kiln shelves. Don't warp or crack. They contain 12% more alumina that regular cordierite shelves. They 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!