I just finished installing four of your frame replacement kits 2’ x 4’ with clear prismatic lenses into some quite old fluorescent light fixtures. Overall I was very satisfied with the kits. They fit the fixtures very well. Your kits were the only ones I could find that would allow me to replace the frames and lenses without having to buy completely new fixtures.
I am not a professional electrician and am at best an amateur. So there were a couple of things that I would suggest you consider for others like myself. I had watched your video on installing the 2’ x 2’ replacement kit. To be honest, I felt that installing the 2’ x 4’ kits was not quite as easy as shown in the video. I think it would have helped to see a video on the actual installment of a 2’ x 4’ frame kit. Also, I’m sure this is obvious to a professional, but it took me awhile to figure out that the best way to install the lenses into the frames was to remove the small screws holding the short side at one end of the frame. If you included this step in the video it would have made my work quite a bit easier. These are not complaints. I would definitely buy more of the kits from you if I ever need some. But I think you may be taking for granted the skill level of everyone who buys the kits. Also, the box took a bit of a beating during shipping and had a large rip in one side. Another layer of packing tape might have prevented that. But there was no damage at all to anything inside the box.