Rectangular Deck Mat For use under gas or charcoal grills only. Not for use with firepits or chimineas. Fire resistant fiberglass core coated with high temperature silicon rubber front & back. Protects decks, patio, pavers and driveways from embers, sparks, drips & spills. Ribbed design on back aids in drying moisture under mat Silicone rubber surface is abrasion resistant, uv protected & easily cleaned.