Add instant privacy from your deck or balcony! Each planter has a rattan finish and adjusts to fit any type of railing from 1” - 4; including metal balconies, rounded composite and standard wooden railings - even chain link fences! No tools required! Adjust the arms to fit over rail, lock in place with the included pins and pull out leveling foot to keep planter perfectly level. Then snap trellis together and into back of planter. Each planter has a built-in water reservoir with 1” overflow and hidden tray separates plants from reservoir with slits to allow only the roots to reach the water below, avoiding root rot. Grow your privacy naturally by planting flowering vines! Made from UV-protected resin.