Regulate hive entrance with our Hive Parts Entry Block. This entry block is made of wood that is strong and easy to install, and has a notch that can be used to adjust the size of the hive entrance. The entry block can be used to reduce the entrance during cold weather or to prevent robbing by other bees. The entry block can also be removed to allow full access to the hive. Use it to control the traffic and security of your hive.