Beehive Bottom with Ventilation BoardBeehive Bottom with Ventilation Board Ensure a stable and healthy environment for your honeybees year round with the Beehive Bottom with Ventilation Board. This hive bottom features a durable mesh design that supports optimal air circulation, essential for maintaining colony health. Made from expanded polystyrene with a density of 100 kg m, this hive bottom is built to last, providing your bees with a robust and long lasting home. The ventilation