System Mid Century Full Bed.
Building materials Poplar or forest birch makes good choice to build a frame. These easily accessible forests look well colored or painted, and they are available in different widths and lengths. The side boards will butt against the top and bottom frame boards, getting the extra 4 inches from the thickness of these two boards.

Big Mid Century Full Bed

Gray Mid Century Full Bed

Interest Mid Century Full Bed

Low Mid Century Full Bed

Nice Mid Century Full Bed

Review Mid Century Full Bed

Vintage Mid Century Full Bed

Wooden Mid Century Full Bed