The Meridian SatinAir Adjustable Alternating Pressure Mattress Pump and Pad System is designed to be placed over an existing mattress and is easy to install, use and maintain. The compact, quiet mattress pump alternately inflates and deflates air cells in the pressure pad and comes standard with a variable pressure setting for maximum patient comfort and compliance. The mattress pump features an output of five liters per minute with a five minute cycle time, and can be mounted on the bed with built-in brackets. The air mattresses for hospital beds (or home beds) can hold patients up to 300lbs. The mattress has 130 individual bubble cells for maximum comfort and effectiveness. The alternating pressure mattress & pump system delivers 5 liters of air per minute to the air mattress, alternating inflating and deflating over a 5 minute cycle time. Trust Meridan, the leader in hospital beds for home use and pressure cushion for bed sores. Mattress DOES NOT contain natural latex rubber. Dimensions: 110"L x 35"W x 2.5"H. Power Cord: SJT 13.5 Feet, 3 Prong.