The BPL LifePAP is a great device for the patient with sleep apnea who has been recommended by their doctor to use a CPAP machine. The LifePAP is a much more affordable option, and can be used at home. The LifePAP comes in three sizes, with a maximum size of 58 cm. It also has an optional pressure gauge that can be placed on the machine. This helps to measure the pressure in the room, so that the machine can be adjusted accordingly.