The next 2 are my ventilated inner covers. There is a feeder hole in the middle. I use feeders that allow filling without disturbing the bees that set on this hole. I put a brick over the hole when I’m not feeding. The other holes have 1/8″ hardware cloth on them. There is a toggle for the upper entrance. The wood for the bee space around the outside is from cutting the rabbet for the frame rest.