por 15 power mesh - 1 square yard por-15 because it is a special type of fiberglass cloth, the fibers may pierce your skin and you will experience discomfort. wear a pair of gloves (or other protection) whenever you handle this cloth. as you cut the cloth, some fibers may fly into the air, so be sure to wear the mask provided while cutting. please note that there is one large piece of cloth in this envelope.