The Existalite XHF21.3E is a combined emergency lighting unit designed to fit simply within contemporary luminaires. It can be used to run 1 x 16 or 21w 2D lamp.
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![Existalite XHF21.3E 16/21w 2D Maintained Emergency Gear Tray - Runs 1x 16W/21W 2D Lamp - [EU SPECIFICATION: 220-240v]](https://m.media-amazon.com/images/I/51y92nFPQbL.jpg)
