Available in 5" x 5", 6" x 6", 7" x 7", or 8" x 8"; shelves are approx. 1/2" thick.
The kiln shelves are smooth and flat. These shelves are made from cordierite, a type of refractory clay that has a heat tolerance of over 2150 degrees F.
Apply Shelf Primer to keep glass from sticking to the shelf.