The North by Honeywell BP1002 backpack adaptor is designed for use with the 5400, 5500, 7600, 7700 and RU8500 respirators. It converts these to welding respirators with ease. Cartridges are located on the back, away from the contaminated area which means that the attachment lasts longer. A lightweight design means that it does not add extra weight to the facepiece. Weight is distributed across the shoulders, allowing for a comfortable fit and preventing worker fatigue.