Provides lateral rotation therapy with variable cycle times and low air loss therapy. Mattress re-centers the resident between rotations. Turn is offered up to angles of 30 degrees for pulmonary therapy requirements, with options for ¼, ½ and ¾ turns. Turn times available at 10, 20, 30 and 60 minutes with options to turn right or left only, as well as both sides. Lateral rotation will be automatically stopped when the bed is in fowler or upright mode. Firm side perimeters offer resident safety. 3” raised perimeters are available as an option. Fully removable top cover is four-way stretch. Low pressure and power failure alarms (audible and visual) with silence function.