Photo shows 1x24 Watt Kit.   Note that the protective cover was left on the reflector to avoid flash reflection.

18 Watt and 24 Watt Kits allow you to have strong lighting over tanks with a small footprint. They include a solid-state electronic ballast and the same excellent reflector material found in our larger kits.  You'll also get all the other components you need for installation in your wood canopy or a simple wood enclosure.  And an "Additional Hardware" package is available for installation in a plastic or metal enclosure.

18 Watt Kits have a reflector that is 9.75"L x 4"W and will provide good lighting on tanks that are 11" to 14" long.  The 18W bulb is 9.1" long.

24 Watt Kits have a reflector that is 13.5"L x 4"W and will provide good lighting on tanks that are 15 to 17" long.  The 24W bulb is 12.4" long.