
I added a 42" set first for 72" window, they were strecthed tite and no ripple in curtains very dark only light at edges. So I thought maybe 52" would cover better and there were more ripples but edges were nicely blacked out, now with more ripples in curtain with added 10" in width now the only light comes from ripples at top ( maybe small valance is needed for total blackout).They work nicely to dampen the light, sound and heat and I plan to get 5 more sets to complete my project

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