Defender Security Sliding Window Lock, 1/4in, Extruded Alum, Double Thumbscrew

Defender Sec Sliding Window Lk, 1/4in, Extruded Alum, Wt, Double Thumbscrew Use With Metal-Framed Sliding Doors And Older Style, Metal-Framed Sliding Windows Note: These Locks Are For Use On Sliding Patio Doors And Windows Whose Metal Fins Measure 1/4 In. Or Thinner Each Lock Features A Pair Of Counter Thumb Turn Fasteners For Adding A Strong, Sure Hold Heavy-Duty Cast-Metal Construction With Tamper-Resistant Double Thumb Turn Screws This High Security Sliding Patio Door And Window Lock Comes In A White-Painted Finish Easy To Install In Less Than 10 Minutes Used On A Variety Of Sliding Patio Door Systems, In Addition To Some Older Horizontal Sliding Windows For Further Dimensional Information, Please See The Line Drawing MFG# U 9807