SeaLux WHITE Recessed Plastic Drink Cup Holder replace insert for Marine Boat Car Van no drain No drain holes in the bottom to keep moisture away from electronics or other items below. Install almost anywhere on boat, game table, sofa, cars and RV. Cut hole require 3-3/4"; Flange dia.: 4-1/4"; cup deep 3-1/4" Smooth surface easy Clean. Dimension as show on picture