THere is a large dicussion on the Beesource.com Bulletin Board of Equipment/Hardware Review concerning PermaComb. It is plastic frames with completely drawn comb. It is not foundation it is full depth, at the right angle comb. I am trying to find anyone that has used it and get some pros and cons. So far all I can find is one person who has used it and he is the Distributor of the product. It has been in existance for a number of years. Mr. John Seets, the Distributor of PermaComb, States he has used it for the last 27 years. He is located in Maryland, so maybe someone on this thread knows him. I have order 4 cases of the Permacomb frames. They come in medium size only. The amount of increased honey prodcution should more that offset the cost of the combs. Also the wax moth and hive beetle have nothing to destroy. Curious for comments on the topic. Thanks Doug Suttles