2 Drawer Lens Den. Holds powers to -0.50 to -5.00 in 0.25D steps. Holds powers from -5.50 to -8.00 in 0.50D steps. Holds +0.50D to +4.00D. Powers +3.25 to +4.00 are doubled up in bins. Dimensions: W 12 3/8", H 5 13/16", D 12 3/16"