Heavy Duty Ø38mm Pole The BT5935 are heavy-duty steel poles, capable of supporting substantial loads from B-Tech’s System V Range; a collection of components designed for the installation of CCTV and other ceiling-mounted equipment. Available in 1, 2 and 3 metre lengths and compatible with B-Tech components, allowing professionals to customise their security mounting solutions to their specific requirement, such as pole mounting CCTV cameras and screens from the ceiling with extended drops.