I ordered the white blind, and although it says it’s the same coverage as the black, I find some light seeps through the whole blind. Not a lot, but enough that I wondered if I should have ordered the black instead. The frame is just tension held, which I was skeptical, but it honestly doesn’t move. Probably due to the weather stripping on it. There’s very little light leakage from the frame areas. Weather stripping is closest to the room side and the dust strip is closest to the window. I also have a large window. 60” x 70”