Meridian LED Replacement Gear Trays: Meridian Gear Trays are available as stand-alone replacements for use with already installed 2D bulkheads and have been designed to fit the vast majority of existing round fittings. LEDs are pre-fitted into a metal base plate or tray and there are 5 options in the range, the basic gear tray, one with microwave sensor, one with sensor and a 3 hour emergency facility, one with this emergency facility plus a back-up lithium battery and, finally, a 3 hour emergency with microwave sensor. All trays have a 16W rating and will deliver 1700 lumens.