? The joint with drain is an essential accessory to complete the gutter system, as it allows the rainwater collected by the channel to be evacuated ? The accessory, made with the BI-SYSTEM assembly system, can be applied by gluing or with gasket (which allows better expansion of the channel in the presence of temperature changes) ? In the lower part of the joint with drain, rain pipes with a diameter of mm can be glued. 80-100.

The gutter system has the function of collecting rainwater from the roof and conveying it within a disposal network made up of downspouts, wells, siphons and underground pipes.