Wide Bee Frame Spacer Ends are used to ensure your frames are kept the correct distance apart. Place the frame ends on alternate beehive frames, this will allow 8 frames to fit in a National hive. In natural only. Can be staggered to obtain a narrower spacing. If you find this spacing initially too wide, it is a good idea to stagger the spacers until the combs are partially drawn out. To avoid transferring any contaminates when reusing the frame ends the next season, ensure you wash them in hot soapy water.