4U 600mm x 450mm cabinet (WxD) Available in several different sizes Lockable, reversible front door with perspex window for extra security Easy cable entry options via top, bottom and rear Vented side panels 2 year warranty The range of LINDY wall boxes are available in sizes from 4U 600x450 to 18U 600x600. They are made in the UK from using sheet steel construction and with many of the sizes held in stock, we can deliver to most places in the UK the next day. Each wall box is delivered fully assembled and include 2 keys for the lockable doors.