Looks like Seagull low voltage linear halogen lighting. If you want a great resource for under cabinet and interior cabinet lighting...check out Outwater Plastics. If have not visited their site, you will be blown away with what they offer and their pricing is terrific. If you need art glass for cabinet doors they have the best selection, will custom cut the sizes you need and ship in days.

Thank you for the suggestion! I live in Florida and tend to avoid halogen due to the heat. I am interested in LED inner- and under- cabnet lighting but have become overwhelmed by the selection.