
Grated drainage box
A drainage box with an accessible grated top.
A grated drainage box provides an inspection and collection point in a suitable drainage layout. Its position, connections and access for cleaning need to be planned for the property.
Specialist option. Confirm availability, dimensions and compatibility with Highland for your project.
Grated drainage box — dimensions
Match the letters in the drawing to the measurements below. System numbers identify the nominal size; use the listed measurements for the part itself.
| System | L | H | D1 | D2 |
|---|---|---|---|---|
| STEEL | 320 mm | 285 mm | 110 mm | 125 mm |
Dimensions are in millimetres unless marked otherwise. Confirm the selected size and adjoining fittings with Highland before ordering.
Choosing the right fitting
Describe the existing roofline or drainage connection and the fitting you need. Fixing surfaces and adjoining components help establish the appropriate option.
The 3D view illustrates the component’s form. Use the published dimensions and installation instructions for the actual work.
Part of a coordinated system.
The eavestrough system is modular and jointed. Gutters, corners and downpipes connect through fittings selected to work together.
The steel eavestrough system carries a 40-year warranty from the manufacturer. Highland’s 5-year workmanship warranty is separate. Ask for the written terms and confirm the cover for your chosen components, including specialist accessories.


