Beckett slabs did offer some UV protection if I remember correctly. I've got a small, 12x12 collectibles room. I display cards both graded & ungraded. Comics both graded & ungraded. One small window, but it's got the darkest possible UV film. No LED lighting. One traditional overhead light, rarely used. One vintage UNC helmet lamp gets the job done. Rotate displays. Never a problem going on 12 years now. Well, I did knock a PSA 9 Eric Dickerson rookie off my wall display it landed in the worst way. Suffice to say there's 1 less PSA 9 on the pop report and I learned to stay alert always
