The No Drill Blackout Cellular Shades are very easy to install
The sun comes up here in central New Hampshire at around 5am in the summer and can brighten the entire room. We bought the No Drill Blackout Cellular Shades for installation inside the window frame. The No Drill feature really works well; it was great not having to drill any holes. The room is much darker as the shades block almost all of the sunlight. Some sunlight still comes in along the sides between the window frame and the shades, as Blindsgalore had said would happen, in their description.