Thank you for asking about our largest planter from the planter box factory. The internal volume of our biggest model is 60 cubic feet, which equals 448.8 US gallons or approximately 1,700 liters. To give you a clearer picture, this planter has internal dimensions of 96 inches in length, 36 inches in width, and 30 inches in depth. That means it can hold enough soil to fill a small car or support deep-rooted trees, shrubs, or a substantial vegetable garden.

This massive planter is engineered with reinforced steel corners and a durable, weather-resistant finish, making it suitable for commercial farms, rooftop gardens, urban green spaces, and even large-scale event installations. The generous depth of 30 inches allows for excellent root development, while the wide footprint provides stability even when fully loaded with wet soil.

Because every project has unique needs, our factory can also customize the internal dimensions to increase or decrease volume while maintaining structural integrity. If you need even larger sizes, we can produce a seamed or modular planter that multiplies the volume with a simple connector system.

In short, the largest standard planter from our factory offers an internal volume of 60 cubic feet (448.8 gallons). If you have a specific space in mind, we are happy to calculate the exact volume for a custom-made planter box that exceeds or refines this size. Just contact our team with your required dimensions, and we will ensure you get a robust, precisely measured planter that meets your project's demands.