This is the best way to light up a sign externally, commonly used in conservation areas or where planning permission for an internally illuminated sign can not be granted. The trough lit sign is sleek in appearance and offers brilliant downward or upward illumination. 3D City powder coat their troughs to suit both sign and building. We offer to supply any length and any RAL / BS Colour. 3D City trough lighting is fitted with LED tube lights that deliver a more reliable light that also reduces the power consumption and greatly improves energy efficiency. These fittings do not require starters or chokes so eliminate long term maintainence. Our trough lights deliver a smooth and even light in a contineous beam.