Greenbo Railing & Deck Planter make urban gardening a breeze with their super snug fit on rails and bannisters of any shape, up to 4 inches wide, without the need for hardware! They make garden maintenance easier, too. Our "no drip" built-in draining solution includes two removable, cleanable and replaceable trays that hold excess water away from plant roots, preventing rot and fungal issues. They also prevent messy drips and streams of draining water. The Greenbo Planters are made of high-quality materials, including 100% percent weather-resistant resin and ingredients that protect against extreme weather damage. Urban gardeners can claim their own piece of natural heaven. Greenbo railing designs are changing the city landscape with high-tech style. The ONLY planter that fits securely on ALL railing shapes (round, oval, rectangular, etc) and sizes up to 4"/10cm wide. Patented design holds planter firmly on railing. Self-mounting -- no screws, brackets or other hardware necessary. No-drip drainage system recycles waterPatented anchoring mechanism for theft protection, Sustainable, durable and 100% weatherproof