Shallow Saucer 14" White Acrylic (3-5/8" Deep, 14-1/8" OD, 12" Fitter) (item # 4114-SI-S14W) This diffuser family utilizes a shallow saucer design to give maximum light output in a classic shape. Measurements: 14-1/8" across, 3-5/8" high, 12" inside ring.