Welding Screen/Curtain Flame retardant vinyl welding curtains provide projection from sparks, spatter, noise, and harmful UV rays. Premium FR Vinyl - Specialized, thick (14mil) flame retardant PVC vinyl offers protection and durability for metalworking environments. Ultrasonic Welded Grommets - Flexible, tough connection points stretch to optimize fit to frame while maximizing screen longevity. Compliances - Meets ISO 25980 Standard for Transparent Welding Curtains, California Fire Marshal requirements for Flammability Testing per CPAI-84, Meets NFPA 701 test requirements for Flame Retardancy.