Med-Aire Alternating Pressure Pump and Pad System with end flaps. The quiet pump alternately inflates and deflates 130 individual bubble air cells while the 4 LPM (liters per minute) pump produces consistent air flow and pressure over a 5 minute cycle time and is available fixed or variable. The variable pressure setting on pump allows for individualized comfort increasing patient compliance. The pump has built-in brackets for easy mounting to the bed. Dimensions: 36" W x 78" L x 2.5" H.