Introduction to Hopper boxes
Most popular size is 240 x 300mm. All hopper boxes (Rainwater header boxes) can be made to any size.
The common reason for moisture inside walls from balcony areas, is the absence of hopper boxes. Hopper boxes prevents water from running down the wall and eventually damaging the wall. By installing a hopper box with a downpipe, water is controlled down to the ground… point.