Unassembled heavy duty inner cover with fully-lapped corners and 3/8″ plywood. One side is completely flat. The other side has a 3/8″ recess. Standard cutout for bee escape in center.
Commercial Unassembled 10-frame Flat-Sided Inner Cover
Unassembled heavy duty inner cover is completely flat on one side with a 3/8″ recess on the other side. Standard cutout for bee escape in center.