An adjustable bed system includes first and second end boards. A first height adjustment mechanism is secured to the first end board via a first mounting member and a second height adjustment mechanism is secured to the second end board via a second mounting member. The second height adjustment mechanism is independent of the first height adjustment mechanism. An external housing member is engagable with one of the first and second mounting members. A transition box is operatively engagable with one of the first and second height adjustment mechanisms. The transition box is positioned within the external housing such that the transition box is substantially inhibited from rotation during height adjustment of the bed system. A drive shaft interconnects the transition box, at a first end thereof, and the other of the first and second height adjustment mechanisms, at a second end thereof.