3 drawer Lens Den for Frequency 55 Multifocal. Sphere powers: +4.00 to -7.00. Add powers +1.00D, +1.50D, +2.00D, +2.50D +1.00N, +1.50N, +2.00N, +2.50N Dimensions: W 12 3/8", H 9 2/3", D 12 3/16"