made this this afternoon, base is 18x36, middle section is also 18x36, and top is 18x24, all 3/4" plywood, cut to 3" wide and joined with pocket screws. some smaller pieces cut to 4" long for the brackets on the base and between the top and middle sections. still need to add cardboard to top section. no tools needed to put together or take apart, should fit in most any trunk.