The rectangular siphon flex is a piece made of plastic whose function is to cover the view of the siphon and limit the fall of objects through that area for the Concept model drawer when installed under a sink or washbasin. This piece is fixed with screws to the back of the drawer and thanks to it these spaces can be used optimally and with a pleasant aesthetic finish that you can find in three variants: white, gray and anthracite gray.

Yes, for the assembly of the rectangular under sink insert it is necessary to make a 90º angle straight machining cut, although it is recommended to make a machining cut with a radius of 20 mm.