Carrying system for a powered air purifying respirators, powered air purifying respirators and powered air purifying system

The invention relates to a carrying system (1) for a fan filter unit (20) of a fan filter system (30) comprising a Grundgurt (2) for placement of the support system (1) on the body (40) of a user, and a fastening system (3) to the Grundgurt (2) for fixing the fan filter unit (20) in a first position (4) on the Grundgurt (2), wherein the attachment system (3) is designed such that the fan filter unit (20) in at least a second position (5) on the Grundgurt (2) can be arranged, wherein the second position (5) different from the first position (4). Further, the invention relates to a fan filter unit (20) for a fan filter system (30) and a fan filter system (30).