Keyed Door Lever Secure entry with a keyed locking system for exterior doors. Can be unlocked using the included keys from the outside or with the convenient thumbturn button from the inside. Ideal for bedroom, home office, or any room requiring controlled access. Passage Door Lever Nonlocking, keyless design for easy access from both sides. for hallways, closets, laundry rooms, or interior spaces where locking is not required. Adjustable Backset and Door Compatibility Adjustable backset ranging from 60mm (23/8 inch) to 70mm (23/4 inch) for flexible installation. Fits standard door thicknesses of 35mm (13/8 inch) or 45mm (13/4 inch). Reversible Installation Designed for both righthanded and lefthanded doors, ensuring compatibility with any door orientation. Practical Use Scenarios 1. Use the keyed lever on your front or back door for secure entry, while installing the passage lever on interior connecting doors for easy movement between rooms. 2. Secure your home office with the keyed lever to protect sensitive documents and equipment, while using the passage lever in areas with frequent, open access such as a hallway. 3. Equip closet doors with the passage lever for smooth, reliable operation without the need for keys, while maintaining security on main entry points with the keyed lever. Both levers offer durable construction, smooth operation, and easy installation, making them a reliable choice for improving security and convenience in your home or office.