The Bird Screen should cover
most of the glass area of your window. (Experience has shown that a
few inches on either side, top, or bottom of exposed glass does not present
a danger to birds.) It can be slightly smaller in width than the glass
area or slightly wider. If using the suction-cup brackets on a window
that opens by swinging outward, the Bird Screen should be narrower than
the window frame.
24" Bird Screens can fit windows as narrow as 21".
For larger windows, multiple
Bird Screens can be hung side-by-side (The maximum width of one Bird Screen
is 3 feet).