Passage Function: Baldwin's passage knobsets have no locking function and are free turning on both sides. These knobs are perfect for a hallway or closet where no locking is necessary. Sometimes passage knobs are used in conjunction with a deadbolt for an entrance or back door. Product Technologies: Solid Forged Brass Construction: All Baldwin hardware begins with raw bars of solid brass which are heated, and pounded into specially made dies—producing a stronger, more substantial product. The difference between lesser metals and heat forged brass is noticeable the minute you hold it in your hands—solid brass is heavier, smoother, and naturally resists corrosion. Premium Estate Latch: An industry standard, Baldwin's Estate latch features a 28 degree rotation providing for easier turning and smoother operation than latches utilizing a 40 degree rotation. Each lever-strength latch also includes heavy-duty springs to offset the weighty construction that accompanies solid forged brass. Further, each Baldwin latch comes with an anti-friction insert that allows for nearly silent closing while also greatly reducing strike plate scratches. Lifetime Finishes™: Baldwin's multi-patented Lifetime Finishes™ provide unprecedented protection against the effects of weather, normal wear and tear, and even the rigorous test of coastal salt air. By adapting the vapor deposition processed used to create premium gold pens, Baldwin creates a unique surface across your door hardware that is guaranteed to withstand the ravages of time. Living Finishes: Baldwin Living Finishes, which include Non-Lacquered Brass, Vintage Brass, Oil Rubbed Bronze, and Distressed Oil Rubbed Bronze, are designed to mimic the patina of a well-loved piece of vintage hardware, and as such will change and adapt over time naturally. For those who appreciate the well-worn look of aged door hardware, but still require the strength and durability of a Baldwin finish, Living Finishes are an ideal fit. Concealed Screws: Baldwin Estate Collection knobs and rosettes install cleanly on both the interior and exterior of the door, completely concealing all screws required for the installation. All you'll ever see is the door, and the hardware you've chosen for it—seamlessly co-existing. Product Variations: There are brand names, and then there is Baldwin