Short answer
On ground and garden floors, opening the window means people in the street can see in. Drawing the curtain, though, stops the room airing.
Privacy with a window filter
The Odera window filter is dark on one side and light on the other. When it is fitted with the dark side facing out:
- It is hard to see in from outside in the daytime.
- The view out from inside stays clear.
- With the window open, dust, pollen and insects stay outside too.
Made to measure: hook-and-loop or roll

