The anthracite gray concept rib is a complementary piece belonging to the kit to assemble the drawer, it has a height of 138mm, corresponds to the right part of the drawer, and has a depth of 350mm. They are fixed to the drawer by screwing the piece on the front parts and later. The piece is made of steel so it supports the weight perfectly and guarantees durability, resistance, and consistency for the drawer. It is finished in anthracite gray and each package contains a total of 20 units. Its installation is simple and can be carried out without prior preparation.

The RAL code of the anthracite grey finish of the sides of the Concept drawer is approximately 7043. The RAL code of the white finish of the sides of the Concept drawer is approximately 9003.