Kwikset is the leading residential lock manufacturer, making homeowners feel safe since 1946. Laurel Knob Privacy Door Lock with New Chassis with 6AL Latch and RCS Strike Satin Nickel Finish Laurel Knob Privacy Door Lock with New Chassis with 6AL Latch and RCS Strike Satin Nickel Finish. Kwikset works hard to understand the world you live in, so that we can do everything we can to protect it. Our interior and exterior door products provide customers with the quality, technology, durability and style they want while providing the highest level of security.