Comfort-Air half mask respirators and cartridges are designed to fit properly under grinding and welding shields. Combined with our DiskitP100 or DiskitP100OV pancake style filters makes for a winning combination. All Comfort-Air half masks offer a low profile design that increases field of vision and allows a grinding or welding shield to fit properly. The Diskit P100 series pancake style filter is only 1/4' thick an ultra lightweight. The unique frame allows the filter material to load evenly and reduce breathing resistance while increasing filter life.