The escape board is used to clear bees out of the super so honey frames can be removed for harvesting. The Great Escape by Ceracell fits between the brood boxes and the honey supers. Once the bees exit the supers through the plastic cone shaped escape tubes, they are unable to get back into the boxes above. Because there are 10 spots for the bees to exit, this bee escape is superior to other models on the market. For best results, place the escape board on the hive 24 hours before you are ready to extract honey from the hive. This bee escape fits on a standard 10-frame Langstroth hive.