This feeder is similar to our Bread Box Window Bird Feeder but includes the additional pleasure of a 2-way mirror. You'll have great up-close views of the birds but they won't be able to see you. Designed to sit inside the house, this feeder is easy to install and offers an extra-large viewing area. Simply place the feeder on the windowsill and slide out our unique, dove-tailed wood side panels to fit the window. The one inch thick panels provide great insulation and security. Feeder fits most double hung windows from 24" to 36" wide. Made from plantation grown mahogany, the feeder is easy to fill and clean from inside your home.