Product Dimensions (l x w x h) : 9.875x11x13.25in Rack Holder. This clear acrylic rack holder is suitable for use on a bench top or in a freezer to maximize use of space. This rack holder has four shelves to hold eight trays including fraction collector trays. It can fit many different racks. The dimension of (1212Y05) rack holder with included rack is 9.875" W x 11" D x 13.25" H. Each (1212Y05) rack is supplied with one (1212Y46) (yellow) microcentrifuge tube rack. Compartment dimensions are 9 3/8 W x 10.75 D x 3 H. Supplied with non-skid feet.