National Underfloor Entrance - Bottom Bee Space Solid Floor Candle The cell bar halves simply

The cell bar halves simply press together

Add the needle and practice dispensing a drop or two outside the cages (it's actually harder than honey because it tends to squirt out too much) before applying a couple of drops into the other trough in each cage

The frame brackets should be attached to a new deep frame with the U's facing up and the top of the bracket at or near the top bar as shown

Our bees are raised on DN4 National frames

Test fit the end brackets

National Underfloor Entrance - Bottom Bee Space Solid Floor Candle The cell bar halves simplyFor National hives using bottom bee space. This includes many of the bigger manufacturers, if the tops of your frames sit level with the top edges of your boxes, you're on bottom bee space. This version has a solid floor.