Swingline Stratus Acrylic Letter Sorter, 7.5 x 3.25 x 3.5, Clear (S7010134) Letter sorter allows you to quickly and easily separate items into two groups Made from durable acrylic material. Solid base ensures the sorter stays firmly in place. High arc shape not only looks great but is able to keep items secure and upright Perfectly clear with a modern, rounded, shape this desk accessory has an upscale appearance Premium design can hold thick envelopes; 7.5 x 3.25 x 3.5 inches overall size