^^^ Where? In the slums? Hi, it's called get blackout curtains. They even have a white lining so your house doesn't look like Charin's RV from the outside.

Or you can buy the blackout liner separately. I got mine from here.

Or here we have the liner as a part of the curtain.
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"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K