Yes—your planter box factory can normally add drainage holes at the bottom on request, and in many cases bottom drainage is already standard or a standard option. The important point is that “drainage holes” does not always mean the same location on every planter box. Some factories pre-drill bottom holes by default for outdoor models, while others offer side drainage, concealed drainage, knockouts, or optional plugs. If your design needs water to exit directly from the bottom, ask the factory to confirm that bottom placement is available for that specific material, size, and liner.

For a smooth order, specify the hole diameter, number of holes, spacing, and whether you need plugs, mesh, or a drainage tray. You should also ask whether bottom holes are included in the base price or priced as a customization. If the planter has feet, a false bottom, or a separate liner, confirm that the drainage path still works as intended and does not create staining or instability. In short, bottom drainage holes are usually available on request; many factories treat them as standard, but exact specifications vary by model and order, so written confirmation is the safest approach.