The Sealey TB18 is a compact rear square lamp cluster designed for trailers and light commercial vehicles requiring reliable rear lighting. This E-approved 4-function unit combines stop, tail, indicator and numberplate illumination in a single square housing, simplifying installation and ensuring compliance with road safety regulations. Measuring just 98 x 98mm with a depth of 49mm, this lamp cluster offers a space-efficient lighting solution for small to medium trailers, plant trailers, and general-purpose utility trailers. The lightweight design at only 0.11kg makes it ideal for applications where weight distribution is critical. Supplied complete with bulbs, the unit is ready to install straight from the box, reducing setup time on site. The E-approval certification confirms the TB18 meets European lighting standards for road use, providing assurance for professional contractors and hire fleet operators. Replacement bulbs are available separately as consumable part TB181, ensuring s