There really isn't much to write about this top plate. A 5.5 inch hole is required for proper installation. There are no screws included which might be an issue for some but to be honest I never use the screws that come with the products (they are always cheaper quality). a small hole on the underside of the lid (middle) that looks like you could attach a small chain and attach it to that hole with a screw (probably #6) and then you can attach the other side of the chain to the inside underneath fasten cover plate so you can not lose the cover after installation. My only concern is that the finger notch isn't deep enough toward the center. So if you're holding them with two fingers, you really don't have enough lip to hold them securely.
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