This Tower Unit with 7 shelves is a popular choice. Available in a wide range of different finishes.
There are 2 widths of either 400mm or 600mm wide x 457mm deep x 2100mm high. It can fit a huge range of widths by cutting down the supplied hanger bars.
It has a sturdy 18mm construction which ensures quality while still being straightforward to assemble.
It includes 2 x hanger bars at a huge 2.5m length each, that can be cut to size.