This planter is great for home or apartment use and helps you make the most of your porch or patio living space by growing a mini garden in an elevated space. Compression design ensures a secure fit on railing. For year-around stability or in high wind environments, secure the planter to the rail by running a cable tie (not included) through the punch-out holes under planter. Planter was designed to maximize growing space and features a tiered bottom design allowing dirt and roots to grow strong and deep. These planters feature a smooth texture with a matte finish and pre-drilled drainage holes. Use on patio, mailbox post, balcony, fence or deck railing.