Clear Acrylic Riser Set of 3 (3-Inch, 4-Inch, 5-Inch) Large riser size: 5 x 5 x 5 inches 3 molded clear acrylic risers Small riser size: 3 x 3 x 3 inches Medium riser size: 4 x 4 x 4 inches They might appear scratched and frosted upon arrival, our risers have two thin protective films on the insider and outside that must be removed.