CB AutoFill is the lowest-maintenance version of our windowbox system.  The box uses the AutoFill container irrigation system to deliver the convenience of automatic irrigation, but with the advantages of sub-irrigation. Each box is connected to a low-pressure water line and controlled by its own float valve, which adjusts the water level to provide the optimal moisture level to the flowers

See a detailed animation of the AutoFill system                                                    

The CB AutoFill windowbox has a removable internal liner, so that it may be mounted and easily cleaned without plants or flowers.  The liner may be easily planted off-site and transported to the jobsite.  The box is easy-to-hang, whether from a wall or over a rail. The practical design, minimal maintenance and durable construction make them an ideal solution for commercial applications like parking structures or hotels & resorts.

Each box is made up of three main parts – the shell, the liner, and the AutoFill valve.  The shell is a durable, watertight fiberglass and thermoplastic material with a hanging lip.  The valve is mounted to the bottom of the shell, and regulates the water level in the reservoir inside.  The valve, part of Tournesol Sitework’s patented AutoFill system, maintains the correct water level in the reservoir to keep the plants at their best. The system is fed by a low-pressure (<20psi) irrigation line.  One main line can feed up to 100 boxes.  Although Tournesol recommends that each main line have a timer valve as a fail-safe in case of box failure, each box is controlled by the AutoFill valve inside.

See a detailed animation of how the AutoFill system works        

All CB AutoFill boxes are fitted with a copper overflow drain that will allow excess water to escape the reservoir in the case of severe rains.  The drain may be allowed to free drain, or may be plumbed into a drainage system.  The removable liner has both water inlet as well as air holes to provide both critical moisture and aeration to the roots of the plants and flowers.  The system is highly water-efficient, keeping irrigation water in, controlling rain water, and minimizing evaporation from the topsoil.

Wall-Mount Brackets – Small, simple and inexpensive, these 3" x 3" brackets can be used anywhere there is a solid wall to mount against. Use one per linear foot of CB AutoFill.

Rail Brackets – Standard rail brackets are available for ½” through 5-1/2”" square tube railing. Tournesol Siteworks can also provide custom rail brackets for round railing, or retaining clips (seismic/vandal restraints) to make sure the boxes stay in place.

Surface-Mount Brackets – Specifically for the Coronado Box and CB AutoFill.  Neither box can be direct-drilled for surface-mount conditions. A simple 2-part stainless steel trap-bracket uses the recess on the side of the box to keep it in place.

BioGuard Root Control Squares – A simple way of preventing roots from growing into the water reservoir of container irrigation systems, extending plant life.

Additional CB AutoFill Liners – To use as a part of a flower rotation.  While one set is being used in the field, grow on the next color rotation in the greenhouse. Easy to change on the fly!