Modular user-assembled adjustable, and high-low adjustable beds

A frame for an adjustable bed comprising:

• a first section having two longitudinal frame rails separated by at least two lateral members extending between the two longitudinal frame rails, and two sleeves each having a cavity with one of the two sleeves on each of the two longitudinal frame rails, and each sleeve having at least one notch in a sidewall of the sleeve;
• a second section having two longitudinal frame rails separated by at least two lateral members extending between the two longitudinal frame rails, and two sleeves each having a cavity with one of the two sleeves on each of the two longitudinal frame rails, and each sleeve having at least one notch in a sidewall of the sleeve, and in each sleeve a floating inner tube, each floating inner tube is articulable in a transverse and lateral manner within both the sleeve of the second section and the sleeve of the first section with improved articulability provided by the at least one notch in each sleeve to guide each floating inner tube into the corresponding sleeve of the first section to combine the second section and the first section, and each floating inner tube is movable between a second position retracted in the cavity of each sleeve and a first position extending from the cavity of each sleeve;
• and
• wherein the second section is selectively combined with the first section with a portion of each inner tube on the longitudinal frame rails of the second section positioned in each sleeve of the longitudinal frame rails of the first section to selectively combine the first section and the second section.