This large under-grill mat measures 79×39 inches and is specially designed for Blackstone grills. It features a double-sided fireproof structure, suitable for outdoor grills, fire pits and fireplaces. The mat delivers excellent fireproof performance to effectively block high temperature and open flames, reducing the risk of ground scorching. It also offers reliable oilproof and waterproof properties, preventing oil and soup from seeping in to avoid stubborn stains on courtyards, patios and lawns. The double-sided usable design improves flexibility, allowing both sides to be laid and extending the service life. Made of durable material with neatly finished edges, it resists curling and cracking for long-term outdoor use. The oversized size provides full coverage under the grill, reducing cleaning workload. Lightweight and easy to store, it can be folded conveniently when not in use to save space. It is suitable for outdoor barbecues and courtyard leisure, offering stable and practical protection for outdoor cooking areas. Material: Fiberglass.