A backdrop kit includes a pre-cut 1/2" thick base, (3 and 1/2" wide X length), and a back section 3/16" thick, (10" tall x length), and the necessary screws to assemble. Simply line up the base with the line and holes on the back section... Insert screws being sure to drive screws in fully, (going through the first layer). Apply latex adhesive to joint for a stronger bond. Mount with scenery or building kits of your choice. Back drop kits come in 24", 36", and 48" lengths.