Description:Polystyrene National Jumbo 14 x 12 complete polyhive incl.: 1 floor incl. varroa tray and metal grid1 roof2 supers incl. framerest1 Jumbo incl. framerest 1 innercover (transparent plastic) 1 queen excluder (plastic)Polyhives is a newly devolped polystyrene hive made from high density polystyrene. Manufactured in Denmark specially for the British market.