Mirart Clear Acrylic Display Risers-Set of Three (2 inch, 3 inch and 4 inch) 3/16 inch thick clear acrylic, polished edges & sold in sets of 3 Small riser is 2 inches high x 2 inches deep x 2 1/4 inches wide Medium riser is 3 inches high x 2-7/8 inches deep x 3-1/8 inches wide Large riser is 4 inches high x 3-3/4 inches deep x 4-1/4 inches wide Made by hand at Mirart in the U.S.A.