This background support systems has been developed to meet the requirements of photographers. Comes with interlocking 4 section crossbar. and a handy carrying bag with compartments. Collapsed at 42-1/2" it extends to 13' high with crossbars that extend to 13.4'in width. Where the Top of the stand meets the crossbar there is a screw and wing nut to keep the crossbars secured to the stands. This three-piece unit is ideal for supporting 53" or 107" background paper, muslins, quilts, drapes, display panels, etc.