In addition to the FEX combi screw for fixing fittings for plastic windows with steel reinforcement and the FEX coupling screw for connecting PVC frame profiles, SPAX also offers the SPAX frame anchor for window installation purposes. The SPAX frame anchor is the ideal solution for fixing plastic or wooden frames without using plugs. In the case of plastic, the frame anchor with flat countersunk head and matching plastic cover caps are used. For wooden frames, the frame anchor with cylindrical head is used. The frame anchors guarantee tension-free distance installation as well as precise and permanent fixing.