
The name is really simplistic, and describes the product perfectly. A box gutter is simply a gutter that is box shaped, instead of being the usual half moon shape. It is attached in a similar way to a standard gutter, by using connecting joints and brackets to fix it into place.
Some conservatories need a box gutter -it is necessary when building your conservatory on to a bungalow, for example. If you didn't have a box gutter in this example, you would end up with water pouring on to your conservatory roof from the bungalow every time it rains.
A box gutter will hold far more rainwater than a piece of standard gutter cut to the same length. This means that during a heavy rainstorm, when the rain is sheeting off your conservatory roof, the gutters won't start to overflow. Instead they will channel the water away and down the drainpipe - ideally into a water butt if you are trying to conserve water.
If they are installed properly you can also use box gutters to get rid of the water from the roof of your home as well as your conservatory, making it a very versatile option if your gutters need replacing anyway.