Lyson Polystyrene Insulated Bottom Board for bee hives with removable tray for varroa testing and ventilation. Includes a combination mouse guard/entrance reducer. Designed to work with the Lyson line of hive equipment. We recommend painting the Lyson Polystyrene Insulated Bottom Board with exterior grade latex paint to protect against the elements. Dimensions: External: 21-1/2″ x 17-3/4″ x 6-5/8″ See Lyson site for additional details.
