Med Aire Assure 5" Air with 3" Foam Base Alternating Pressure and Low Air Loss Mattress System ResMed CPAP Supplies the minute ventilation algorithm rapidly Seat Type:Single Actuator System with Ultra Low Max the minute ventilation algorithm rapidly adapts to changing ventilation needs automatically adjusting pressure support to break the cycle of hyperventilation and central events Experience the Drive Difference Now Mattress Dimensions 35" (W) x 80" (L) x 8" (H) Weight Capacity 350 lbs Warranty 1 Year Limited Control Unit Airflow 8 LPM Control Unit Alarms Visual Audible Control unit Cycle Time 10 Minutes Control Unit Types Compressor Mattress Cover Material Fluid Resistant Nylon water resistant and vapor permeable