Ensure that your pet bees are happy, healthy, and hardworking when you protect them with the Allied Precision Industries 3/8-Inch Plywood Beehive Insulation Inner Cover.This beehive cover provides extra ventilation and fresh air to your hive, as well as an extra layer of insulation and protection when placed under an outer cover. By adding this wooden vented Inner Cover to your 10-frame hive, it prevents your outer cover from being propolized and stuck to the hive body. This beehive colony cover is made from 3/8-inch plywood with tongue and groove framing and fits on 10-inch beehives. Plus, it can be used with the Bee Escape (sold separately).Keep your backyard bee colony happy and healthy with the Allied Precision Industries 3/8-Inch Plywood Beehive Insulation Inner Cover. .