Description Designed to fit 10 Frame Langstroth hives and lasts for up to 20 years. Spacing on the bottom allows for strapping your hive for transport or wind protection. Standard usage is one Bottom Board per hive to be used as a base for your boxes.Dimensions:22.5 in L x 16.44 in W x 2 in HSuitable For: 10 Frame Langstroth Hives