Common materials include synthetic wicker (often with a PE lining), metal — typically powder-coated for weather resistance — and plastic/PP planter boxes.
Common installation methods are: drop-over (no assembly; simply placed over the railing), hanging racks with adjustable hooks, and wall-mounted systems that use expansion screws or anchors to fix planters to a wall.
Typical styles include rectangular drop-over railing boxes, hanging two- or multi-tier racks, vertical wall-mounted planters with stacked boxes, and freestanding multi-tier plant stands for corners or patios.
Common drainage features include built-in drainage holes, removable drain plugs, and removable trays or reservoirs to catch excess water.
Many planters fit common deck rails such as 4" and 6" widths. Hanging racks typically use adjustable hooks or spacing, with examples showing adjustments around 2"–5".