Product Description Ideal???s SK357 push paddle storm an inside latch that be used with push-button, pull, lever style exteriorandles. COMPATIBILITY-------------The compatible with styles of exteriorandle: Push-button, pull, lever. It replace various styles of insideandles, includingandles that turn (rotate).The SK357 uses 1-3/4"" hole spacing that is on most surface-mount storm doorandle sets. EXCEPTIONS----------BEFORE BUYING, MAKE SURE YOUR CURRENT COMPATIBLE. Some other manufacturers latches that look like SK357, have non-standard dimensions.KEY DIFFERENCES:-HOLE Ensure hole spacing on your current 1-3/4???.-SPINDLE SIZE: When replace your current latch, will most likely keep using your spindle. SK357 accommodate various spindle styles: Flat steel, round steel, square zinc & steel combos, note that maximum spindle size is 3/16??? (.186???). is spindle that is same size whole way, it will likely work with SK357. Please measure carefully take a look at images as a guide. **What???s a ???spindle????** spindle of metal that goes through door outsideandle to insideandle. COMPATIBLEandle SETS----------------------This inside used in following Ideal Securityandle series: GL series (SKGLW, HK357DB05, HK01), ML series. It is also compatible with DX Series (SKDX, LSDXCR2267). ABOUT IDEAL-----------Ideal been supplying door manufacturers with quality since 1956.With Ideal products, trust replacing you're with accessories of equal, better, quality. From Manufacturer Ideal???s SK357 push paddle storm used with push-button, pull, lever style exteriorandles. SK357 replace various styles of insideandles includingandles that turn provided that they have same hole pattern correct spindle size. The hole spacing screw installation is 1-3/4???. SK357 accommodate various spindle styles: flat steel, round steel, flat zinc rectangular steel, note that maximum spindle size is 3/16??? (.186???). What???s a ???spindle???? spindle of metal that goes through door outsideandle to insideandle. This inside used in following Idealandle sets: SKGLW series, SK1215 series, HK357DB05 series HK01-I series. It is also compatible with LSDXCR2267 series. It is equipment Ideal been supplying door manufacturers with quality since 1956.