3 Tier Under Sink or Kitchen Storage Shelf with Adjustable Height and 3 Hooks, Goes Around Drainpipes. For Kitchen or Bathroom 3 Tiers Fits under bathroom or kitchen sink, and around pipes Twelve Snap on Plastic Grids about 11 1/2 inches overall size or Ribs are like open bins, see second picture Six fixed tubes are made of Anodized aluminum Adjustable shelves and has 3 hooks to hang brushes, towels etc. No tools necessary and assembles in minutes. Size: 15  tall x 15  wide x 12 inches deep