Kilns tend to be dusty, and that dust can create blemishes on your work. These kiln mats are great way to keep the dust down and protect your art. Mats are NOT sewn with seams and will have frayed edges.
An extra 1" has been added to the length and width of the mat to accommodate for fray and to trim for proper fit. The mats are rated up to 1800° F / 982° C.