Purchase at:

http://www.deerfeedersightwindow.com

Sight window allows you to see your corn level and know when you need to add more, eliminating unnecessary checking and noise that will be spooking your deer away. Check your corn level from the convenience of your deer blind.

Sight window is made out of Lexan Polycarbonate sheet and is predrilled with all hardware needed.
Put one on every feeder you own and quit guessing when to refill.