Super-strong acrylic construction Holds up to eight 80-well microtube racks filled with either 1.5 or 2.0 mL microtubes. These racks help you keep large numbers of microtubes organized on your benchtop. Plenty of room to slide the racks in and out. Vertical rack measures 236 x 157 x 234 mm; horizontal rack measures 310 x 236 x 122 mm.