Schlage ND70PD Rho 643E Grade 1 Classroom Lock

Product Description

The SCHLAGE ND70PD RHO 643E is a Grade 1 commercial classroom lock designed for institutional and educational facilities where controlled access and durable hardware are required. Built to ANSI/BHMA Grade 1 standards, it delivers heavy-duty cycle performance suited for high-traffic doors. The lock features the Rhodes lever design and is finished in Aged Bronze (643E), offering a traditional aesthetic that coordinates with commercial door hardware sets. The non-handed configuration means it installs on both left-hand and right-hand doors without modification, simplifying procurement and installation on mixed-swing openings.

This lock is intended for classroom security applications in schools, universities, government buildings, and similar institutional settings. The classroom function keeps the exterior lever locked by default, allowing egress from the interior at all times while restricting outside entry. A standard cylinder allows keyed entry from the exterior, which is the typical configuration requested by facility managers and security coordinators. Licensed locksmiths and commercial door hardware installers are the primary trades that specify and install this unit.

Key Features

• ANSI/BHMA Grade 1 rating for heavy-duty, high-cycle commercial use
• Classroom lock function: exterior lever locked by default, free egress from interior
• Rhodes lever trim for a traditional institutional aesthetic
• Aged Bronze (643E) finish coordinates with complementary commercial hardware
• Non-handed design installs on left-hand or right-hand doors without modification
• Standard cylinder for keyed exterior access

Compatibility

Designed as an OEM-style replacement or new-installation commercial classroom lock compatible with standard ANSI prep doors in institutional and educational facilities.

Installation Notes

Installation should be performed by a licensed locksmith or qualified commercial door hardware technician familiar with ANSI door prep standards. Verify the door edge bore, cross bore, and backset dimensions before installation and confirm the door is properly prepped for a cylindrical lock chassis. Disengage building access control or key system integration before servicing an existing lock. Follow applicable building and life-safety codes regarding egress hardware requirements for occupied educational facilities.