Motorized knee and head section adjustment with four position pendant control. Hi/lo crank is permanently attached at foot end of bed for height adjustment; crank folds away for storage. Drive shaft controls height of bed and installs with two quick connections. No messy cables to connect or store. Head-end height 37 5/8”, foot-end height 35 7/8”. Overall length 88”, bed width 36”. 80” spring. Mattress not included.