Heavy-duty extruded aluminum lock with steel thumbscrew for use on metal horizontal sliding windows. For a non-heavy-duty lock see item no. U-9980 or U-9982. Finish by tightening thumbscrew with pliers to securely lock windows in closed or ventilating positions. For a non-marring lock see U-9820, U-9821, U-10876 and U-10551. For vinyl windows use U-9809 or U-10547.
- Compatible with both horizontal and vertical sliding windows
- For use with older style, metal framed windows
- For use with sliding windows that have a maximum of 3/16 in. thick frame fins
- Made of heavy-duty extruded aluminum with steel thumbscrew
- These sliding window thumbscrew locks come aluminum in color
- Ideal for use as secondary security locks, often used for ventilating or securing windows in closed position
- No tools needed for installation
- For further dimensional information, please see the line drawing
















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