Thanks. I've done a bunch of internet searchs. Lots of flip up fronts, doors, trap door-type tops, or even some angled-cut into the side combo's, but nothing that seemed to have the "light tray" attached. Maybe those with more experience can weigh in about lifting the lights each time. My idea would be to have top attached to front, with the top hinged far enough back that light assembly would swing up and out of way when its lifted. Would make getting my arm in there much easier. Could even use small doors on front for smaller jobs like feeding, water checks, etc.