Mobile Big Beta Box with Casters, Beta Radiation Protection. Extra large capacity Beta radiation protection storage bins hold carboys, linens, bench liners, etc. Units come with four heavy duty casters for complete portability. Full shielding from Beta emitters keeps personnel safe during transports. Supplied complete with radiation warning labels and with one liner bag (part # DL-626785-0015).Product Dimensions: 12 x 12 x 24"manufactured in the United States using Acrylic sheet certified by an independent organization to be 100% effective in shielding against beta radiation.