The Moldex 7901 7900 Series low-profile welding respirator is a reusable small half mask designed to fit comfortably beneath most welding helmets. The compact profile maintains a clear field of vision, while reduced dead air space helps limit rebreathing of exhaled air for improved comfort. A soft-touch TPE facepiece provides a secure, comfortable seal for extended wear. The respirator accepts compatible Moldex P100 filters, chemical cartridges and combination cartridges, including semi-rectangular filter options that support low breathing resistance. Optional drop-down and lock-down strap modes simplify positioning during work. The facepiece is made in the USA, PVC-free and NIOSH approved when assembled with approved Moldex respiratory components. Filters and cartridges are sold separately.