4" Sewer Line Drain Cap for Dry Well or Other Projects

The drain cover that was installed in my dry well clean out has pretty big gaps (it's the black one in the pictures). While it works, I'm afraid that my drywell will get clogged with the smaller debris, so I made this cap that has much smaller holes in it. As you can see, it's working. It's designed to fit over a 4.5" wide hole, basically I just slide it over the existing drain cover that's there now.