I have 4 AI Sol Blues for sale. They were on my tank for about 6-7 months and still work flawlessly. They were mounted in pairs on the rails but can definitely be modified if needed. I also have a hanging kit if interested in hanging them. Asking $350 each or $1,300 for all 4, plus shipping, buyer pays paypal fees.. Let me know if you have any questions or offers, PM or text is best 801-589-946. Thanks!