Sifely Double-Sided Keyed Door Knob Key benefits Clean, versatile look: Designed to suit French, Nordic, or American interior styles so the knob blends with a wide range of decors. Secure entry: Double-sided knob equipped with a keyed lock gives reliable controlled access for rooms that need secure closure. Lasting performance: Made from durable aluminum alloy for wear resistance and long service life. What makes it stand out Durable aluminum alloy construction resists everyday wear while remaining lightweight. High-temperature sealing process provides strong anti-oxidation and rust protection, extending finish life in humid or high-use environments. Double-sided design with key lock supports practical security needs without compromising style. Function and compatibility Function: Double-sided doorknob with keyed locking mechanism for controlled access. Material: Aluminum alloy. Finish protection: High-temperature sealing for oxidation and rust resistance. Compatible settings: Ideal for interior doors where style and security matter. Installation Includes clear instructions for installing a Sifely door lock. Installation is straightforward for standard interior door preparations. Typical applications (practical scenarios) School classroom or office corridor: Provides controlled access to classrooms or staff rooms while matching institutional interiors. Bathroom or restroom in commercial or residential spaces: Offers a corrosion-resistant finish suitable for humid environments. Private office or meeting room: Delivers a polished, stylistically compatible lock solution for offices that need both appearance and security. Specifications summary Brand: Sifely Type: Double-sided doorknob with key lock Material: Aluminum alloy Key performance features: Antioxidation, rust protection via high-temperature sealing This Sifely knob is a practical, durable option when you need a keyed interior lock that combines security, corrosion resistance, and a style that fits French, Nordic, or American interiors.