String Furniture - Shelf String System - Brown - Veneered particle board - Designer Nils Strinning; String Furniture Shelf Brown Wood. Dimensions: W 78 cm x D 20 cm - Thickness 2 cm. Wood shelves are available in two widths, 58 and 78 cm, and two depths, 20 and 30 cm. The shelves are compatible with String® System grid and plexiglass uprights, provided that the shelves and uprights have the same depth. Shelves are flexible and easy to move to suit your preferences. Create a monochrome shelf or mix and match shelves in different colors and woods. Each package contains three shelves and stands.