Review on Enhance Your Privacy With BDF BLKT Day & Night Blackout Window Film - 24 Hour Coverage | Size 36X12 Ft by Marvin Perry

This film provides absolute blackout. Bright lights shining directly on it are visible slightly but if you need a dark room to sleep in this is your best bet.Installation tips: - Two people! I have applied these films myself to small windows just fine, but the whole process is MUCH easier with two people. If your windows are more than, I'd say 24" in either direction, have someone help you pull the backing, apply to the window, and cut. - They're spot-on in the instructions--use a lot of soapy water. - Even after applying, leave a bit of excess while trimming if tiny bits of light coming in around the sides is going to be bothersome to you.Make sure your room has adequate lighting during the day, this film indeed blocks out all but direct sunlight--and even then, its not going to be enough for ambient room lighting.