Welding Blanket Protective Material Fiberglass Protective Material Coating Acrylic Maximum Temperature 1 000 Degrees F Overall Length 6 ft Overall Width 4 ft Protective Material Color Black Protective Material Weight 28 oz/sq yd Protective Material Thickness 0.06 in Grommet Location Two on Each Corner Standards FM Approved NFPA701 Duty Rating Medium Grommet Spacing 24 in Fastener Type Grommets Grommet Hole Diameter 4/5 in Grommet Material Brass