The Master Lock No. 5420D Portable Universal Lock Box offers a secure and versatile key storage solution for various door hardware styles. With its 2-7/8in (72mm) wide metal body and adjustable shackle, this durable lock box fits tightly on lever, knob, and handle hardware, ensuring robust security. A large open lever design enhances usability, while a durable weather cover protects against freezing and jamming. The vinyl-coated shackle and molded bumper prevent scratches, making it an ideal choice for safely storing spare keys or access cards.