Our insulating board provides thermal insulation while maintaining a vapor transmission rate of 20-25 perm. Sheets are precut to fit 10-frame hive bodies and are made of organic materials including hardwood fibers. The binding agent is also an all-natural product, consisting of vegetable starch containing no added formaldehydes. Place the insulating board on top of the inner cover.
Also available in 8 frame…call to order the 8 frame size