Apollo Adjustable Railing Planter - 24 Inches, Terra Cotta Beautify your decks, fences, railings, and sign posts with these ingenious adjustable railing plantersLock the support arm to the desired width, hang and you are done! No tools, mounting hardware, or drilling required. Ideal for wood or metal railings. Hidden lower bracket keeps the planter level. Excess water sits in the lower reservoir Fits on any sized deck or fence railing from 1" to 4" wide!, Works on chain link, wrought iron, composite, and standard wooden rails Planter arms are adjustable and lower stabilizing arm keeps planter perfectly level, regardless of fit Unit Measurement: 24"L x 7.5"W x 7.5"H Water reservoir holds 6 cups of water with auto-overflow, Hidden tray separates plants from reservoir; with slits to allow only the roots to reach the water reservoir below; avoiding root rot, No tools required