12 NEW MOLDEX 7601 SERIES 7000 ASSEMBLED RESPIRATORS SIZE SMALL W/ 2 CARTRIDGES. ONE BOX OF TWELVE RESPIRATORS. Moldex Pre-Assembled Half Mask Respirator 7000 7601 – Size Small – MOLDEX 7601. The Moldex pre-assembled half mask respirator is packaged 1 per bag, 12 bags per case. The size for this product is Small. Included Cartridges / Filters. 7600 Multi-Gas/Vapor Smart Cartridge. 1 per bag, 12 bags per case. NEW, IN THE FACTORY SEALED PLASTIC!!