Solid: welded plastic (polypropylene) on rigid frame. extra-strong cardboard 2 mm. - Large removable index. Label holder (labels supplied) and prehension hole. - Measurements: H 31,5, W 24,5 cm. - 2 thickness: 7 or 10 cm, in 5 colors. Delivered folded. - Easy installation. * thickness 7 cm: blue / green / red / gray / black * thickness 10 cm: blue / green / red / gray / black