Can’t understand why you cannot see a inside box with a front opening door, whether it opens from the top or bottom. Is it because your pole & box are up high? I cannot see in my one box which I actually have to take the top off to see inside, but I use a small step stool to check everything. This box is one of my oldest (about 10 years old now) and before we began making the front opening boxes (Gilwood style). These newer boxes are front opening doors, and pivot from the bottom (which I suppose would be called a top opener door). It pivots down enough so that the door is actually about even with the floor of the box when it is open and I can see in fine. My boxes are about 5′ from the ground and I am only 5′ tall so works fine. Good luck.
