Originally Posted by Rawfoodgirl3
Could you just put in one of those small peep holes that are on our doors at home?
A Sergei explained, it is mostly about the daylight and ability to see outside. The standard peephole viewer would not work as the screen door would not let you get close enough to the eyepiece to see. There is one available on the market in 2.3/8" diameter that will allow you to see few feet away from the viewer, I believe it is at 235 degree of view. Thanks "Boatdoc"