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

A frame for an adjustable bed comprising:

• a head 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;
• a foot 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 in each sleeve a floating inner tube that is articulable in a transverse and lateral manner within both the sleeve of the foot section and the sleeve of the head section to guide each floating inner tube into the corresponding sleeve of the head section to combine the foot section and the head section, and each floating inner tube is movable for each of the two sleeves of the foot section and for moving between a first position retracted in the cavity of each of the two sleeves of the foot section and a second position extending from the cavity of each of the two sleeves of the foot section;
• and
• wherein the foot section is selectively combined with the head section with a portion of each inner tube of the longitudinal frame rails of the foot section positioned in each sleeve of the longitudinal frame rails of the head section to selectively combine the head section and the foot section.