Cavity under flange for caulking allowing installation without fasteners. Molded-in stand offs on bottom & four drainage holes. Universal size accommodates cans, bottles or glasses. I.D. Hole: 3" on small & medium, 3-3/4" on super. Flange width: 3-1/2" on small & medium. 4-3/8" on super. Depth of cup 1-3/8" small, 2-7/8" medium, 3-1/4" super. Beige

MFG# GH33-N1-U GH33N1U UPC# 021083007533