Bell 11593 9/14/18W AQUA1 LED Bulkhead - Black, Emergency, M/W Sensor On/Off, CCT 870-1700lm. This cost-effective, colour switchable bulkhead is an ideal replacement for 28W 2D fittings. With the benefits of a high transmission frosted diffuser, rear, side & BESA Box cable entry and is IP65 as standard.