Manufacturer: Philips Respironics
Part Number: 1050957
HCPCS Insurance Code: E1399
This Whisper Cap snaps on to the existing Air Intake Port on the back of all M-Series CPAP and BiPAP systems. In tests the Whisper Cap reduced overall sound levels by 3dB, on average. Sound measured 18.2dB at 5cm and 25.3dB at 10cm pressure levels.