Ventilation around the top and ends of this box make it a first choice for making splits or increases in your bee yard. Made of one piece corrugated plastic for durability and strength. The best all around Nuc box on the market. It ships as a flat piece. The customer folds the corrugated plastic to make the nuc box. Due to the size of the product, it can't be shipped overseas in single quantities as shipping costs are too high. Ship wt. 5 lbs. dimensional wt.