Weld Armor Fiberglasss Welding Blanket 4' x 6' Feet with Grommets - 1000 Degree Rating PROTECTS SURFACES: A Tough General Purpose Welding Blanket for Arc Welding Made of 18 oz Heat Cleaned Fiberglass. HIGH TEMPERATURE RATING: Rated for incremental contact up to 1000 Degrees F. BRASS GROMMETS & REINFORCED HEMS: #2 Brass Grommets Reinforced every 2' On Center On All Sides of the Welding Blanket, Plus Hems w/ High Heat Thread. FM GLOBAL, CFM, & NFPA-701 CERTIFIED - For Flame Resistance, Perfect for Sparks Spatter IDEAL FOR ARC WELDERS & MECHANICS: Ideal for General Arc Welding Operations and Auto Repair Hazards During Welding.