THESE ARE MADE IN OUR OWN WORKSHOP AND USED BY OUR SELVES ON OUR OWN HIVES. THEY ARE MADE FROM WHITE WOOD AND ARE GLUED AND STAPLED TOGETHER. THERE IS AN INSPECTION TRAY WHICH CAN BE REMOVED TO CHECK FOR MITES. IF YOU HAVE ANY QUESTIONS FEEL FREE TO CONTACT ME. WE USE RECYCLED CARDBOARD WHEN POSSIBLE AND ALWAYS TRY TO DISPATCH ON THE DAY WE RECEIVE THE ORDER. NO DISPATCH ON WEEK ENDS OR PUBLIC HOLIDAYS. THANK YOU FOR LOOKING