unequipped (without modules), black similar to RAL9005, module installation hole size: h19.7/w14.8mm, dimensions W135/H205/D51mm, robust steel housing with hinged cover and screwed cable clamping part. Suitable for installing 4xKeystone modules from the Synergy21 portfolio. The one for the patch cables Accessible part is foldable and can be opened without tools using a quick-release fastener. The cable entry for the permanently installed Keystone modules is protected against access with a screwed cover. Both cable inputs are protected by foam against the ingress of dust. Protection class IP20 Black powder coating