within the post and locking the tenon 26 within the slat slot 16 with the pin channel 30 providing a means for supporting the distal end projecting hooks 42 of the side rail flange 44 side rail 40 and 41 and spring frame 39 therebetween it is noted that the two corner flanges 44 at each end are parallel with one another and are configured so that the hooks 42 will slip into the open side of channel member 30 and cooperatively engage with the horizontal pins 34 the bunk bed is assembled by aligning the hooks 42 at one end of the side rail 40 supporting the flat spring unit 41 with the open side of the channel members 30 of the headboard 10 at a selected height and force the hooks down onto the selected pins 34 the hooks 42 extending from a bracket 44 at the opposite end of the side rail 40 can likewise be inserted into the pin channel member 30 of the footboard 10 preferably at the same height as in the headboard 10 and forced tightly onto the corresponding pins 34 in a preferred embodiment the sides of posts 12 and 15 which face each other have vertical slots 16 whereby each receive a tenon 26 formed on the distal end of each slat 20 as best illustrated in fig2 3 and 6 the posts 12 and 15 each include a u shaped vertical post channel 14 into which is fastened a vertical u shaped channel.