Sellstrom s19004 cr-39 welding helmet cover plate, 4-1/2″ x 5-1/4″, 50/box sellstrom s19004 polycarbonate welding cover / impact plates are positioned in front of passive or adf filters providing an economic “shield” that protects the more expensive filters from pitting or scratching. This impact plate meets ansi z87.1 high impact and 4-1/2″h x 5-1/14″w and is universal to fit any branded welding helmet requiring this size.