The Nanlite BE-3 Studio Background 3 Roller Support Bracket Holder for 3 Paper Backdrops is a hanging system for hanging and exchanging of up to three back drops. The holder can be fixed to your wall or ceiling so you can easily mount and change between up to 3 paper rolls. This system needs to be mounted at a minimum of 10 cm from the ceiling. While the supplied guides make sure that the chains stay in place. Brackets are 400mm high and maximum 240mm deep and have a maximum diameter of 70mm. The length of the chains is approximately 1.7m. The roll holder protudes about 120mm.