Easily convert an existing Zurn® or non-Zurn floor drain into a ligature-resistant drain to provide a safer setting and effective water drainage. This strainer is designed for environments where occupant safety is critical such as health care and correctional facilities. Simply unscrew the existing floor drain strainer and replace it with the innovative Zurn Z400LRS square strainer. It features a unique tapered radial baffle that resists looping. This best-in-class ligature-resistant strainer resists wedging and has smooth edges to prevent cutting. The strainer has vandal-proof screws to prevent tampering and disassembly. Strainer can be easily cleaned by maintenance staff. The sturdy, retrofit strainer is easy to install and is aesthetically pleasing.