WTB: (electric) Linear actuator

[black_radiation]

Im looking for an electric linear Actuator that has a minimum of 4" of stroke up to a maximum of 12" of stroke, it doesnt matter as long as its between 4 and 12"

Preferrably waterproof but if not it will still suffice.

If anyone has one, please let me know or if you know anywhere in calgary that i can buy one from that would be great.

[JGerke]

http://www.firgelliauto.com/default.php?cPath=90

I will be buying some from there soon as well. What are they being used for?

[black_radiation]

Im using it for my light bar that im fabbing up, its on a pivot point and the actuator will be used to lower/raise the lights depending on the conditions etc, its for a lightbar on the front of my truck