Part Number C1000 Auto Lock has been discontinued my manufacturer the retro fit replacement style by the Interlock Slimline Lock (see picture) C10000 or S1111 links under accessory items. These will directly replace the old Auto lock only 2 new holes will need to be drilled on the sash (see video). To Order Replacement retro fit locks please watch video below. Then you will need to choose the mechanism, cover option and keeper. For either the C10000 options or S1111 options. Discontinued Auto Lock Replacement For WinPro and Cascade Series 9100 Horizontal Slider and 9200 Single Hungs and customers have also said this replacement locks works on Mercer auto locks as well. Used on multiple window lines including Cascade (9/5/2017 and older), Mercer and others
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