Heat Treatment Program (HT) WWCF
 

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This is a process where the wood is heated to achieve a wood core temperature of 56 degrees C for a minimum of 30 minutes. It is then labeled with the ISPM 15 standard mark. You may purchase lumber that has already been treated prior to building your wood packaging material or you may build your packaging and have it treated and then stamped. There are many commercial suppliers of wood packaging materials already built and stamped that you can purchase as well.