19 inch 1RU module frame for 24 individual modules; keystone design. The module frame front is made of black anodized aluminum. It features plastic module support with dust protection covers (other colors available as accessories) that are detachable to the front. There is an integrated cable support with optional strain relief and a label window for identification labels. A label sheet measuring 210 x 297 mm is available as an accessory. It includes a grounding bolt M6 x 10 with nut and lock washer, as well as a 30 cm grounding cable. All fully shielded modules are connected by means of a grounding rail.