Sorry I goof again, that's normal.
The ventilated top was just setting on a double screen board !!
Here I hope is a picture of a couple of ventilated tops with a empty box on top used for feeding purposes.
The top has 3 holes covered with # 8 wire, I can feed, refill, etc with out disturbing the bees.
In the winter I cover the 3 holes with seperate pieces of card board, then cover these with large bark mulch.
In late Jan. I brush the mulch to the side, remove the cardboard covering the center hole and feed.
The top adj, opening is open in the winter & summer except when feeding.
The bottom entrance during the winter is closed except for several 3/ holes.