The surface has embossed and debossed holes of the same size (d = 14.5 mm) with more embossed holes that offer excellent slip resistance. The open area is approx. 20 %. Graepel-Special 14-14 offers an excellent anti-skid effect and displacement as well as a good drainage effect. The maximum embossed field is 540 mm.
This special perforation is mainly used in the industrial and commercial sector. It is frequently used for pre-assembled parts, such as scaffolding planks or treads and ladder rungs for industrial vehicles.