The harvest honey single, deep, plastic Beehive foundation is made of food grade plastic & coated with USA beeswax. The foundation may have some imperfections that appear as raised areas. This indicates places where beeswax has dried. Bees will accept this foundation easily. Use 8-10 of these foundations per hive inside with #wwbul-101, the unassembled deep hive body, 1-2 deep hive bodies will be used per Beehive.