596 (MEDIUM DUTY)
Features
25 oz. black, vermiculite impregnated fiberglass.
Heavy duty sparks, spatter, slag, 1200°F melt temperature flat surfaces, 1700°F vertical plane.
.06” thick.
Sizes 6'x8'
FM APPROVED WELDING CURTAIN
 
615 (HEAVY DUTY) (HIGH TEMPERATURE)
Features
16 oz., Thermofelt.
Light duty welding, light sparks, and spatter.
Non-flamable, non-melting, non-shrinking, scratch free.
Smoking and loss of tensile strength will occur when subject to molten metal.
Not designed for stress relief.
1800°F working temperature.
6'x6', 6'x8' standard sizes.