Versatile Design: NouraVita window box bracket boasts a flexible design that allows for easy adjustments at both the top and bottom. The upper section can be modified to fit railings between 2.4 and 7.2 inches wide, while the lower section can expand from 5.9 to 11.8 inches. This adaptability means it can accommodate nearly any planter type, giving you the flexibility to customize your outdoor area without worrying about compatibility! Two Installation Options: Our adjustable flower box bracket offers the flexibility to be installed on railings, balconies, and fences, as well as on walls. Select the installation method that best fits your needs. You'll have it ready to use in just minutes and can count on its durability for years ahead. Heavy Duty Construction: The balcony flower box bracket features a reinforced bottom design that delivers outstanding support and can hold up to 45 pounds.