Each box is lined with galvanized steel to ensure proper drainage, and recessed caster wheels raise the base slightly to prevent the wood from sitting in standing water.
For planting, use fabric grow bags rather than filling the steel liners directly with soil. The interior is designed to fit standard 7-gallon and 20-gallon grow bags.
For guidance on setup, refer to the “How to PLANT by: Raleigh” illustration below, which shows how the components work together.