For use with standard hinged, inward opening doors with a minimum thickness of 34mm. The design and function of the product is ideal for use in residential or hotel applications to view before greeting a visitor. Features • Concealed fixing screws into the door frame • Any impact forces are imposed in a sheer action of the fixing screws allowing a greater resistance • Visual unlock indicator • Activated by a simple on/off switch If you require assistance with your selection please contact us either by email or phone. |