400mm LED Bulkhead Lights | Large & Durable

400mm LED bulkheads are the large-format option for spaces that demand wide light coverage from a single robust fitting — car parks, stairwells, corridors, loading bays, school hallways, and building perimeters where durability and visibility are critical. Our range of 400mm large LED bulkhead lights delivers high-output illumination in a tough, IP65-rated enclosure built to handle dust, moisture, and impact.

Available across a range of wattages and colour temperatures, with options including integrated microwave sensors for automated switching in low-traffic areas and 3-hour emergency backup for compliance with BS 5266 escape route requirements. The 400mm body provides noticeably wider light distribution than standard bulkheads, reducing the number of fittings needed per run and simplifying installation on larger projects. All units feature IK-rated polycarbonate diffusers, flicker-free drivers, and a minimum 5-year warranty as standard. Free next day UK delivery on orders over £50.