Certified for Fire Doors: Tailored for fire-rated hollow metal swing doors and compliant with fire safety standards. It enables smooth door movement, enhances sealing and stability for dependable fire protection Solid Metal Build & Heavy-Duty Performance: Made of high-grade solid metal via precise processing with an all-in-one robust structure. It is wear-resistant and durable, keeping stable performance under frequent long-term use Hidden Mount & Enhanced Safety: Designed for fully concealed installation inside doors. It avoids external impact damage and prevents unintended opening, keeping doors securely closed for better safety Ergonomic Lever for Easy Use: Upgraded lever mechanism replaces old sliding designs. The latch slides in and out effortlessly with light operation, making locking and unlocking simple for daily repeated use Reinforced Structure & Jam-Free Movement: Reinforced with internal screws for strengthened overall stability. It moves back and forth extremely smoothly without sticking, ensuring steady operation every time, Manufacturer: Maryear