Description
The Schlage B660B 643E is a Grade 1 heavy-duty commercial deadbolt engineered for high-security applications in demanding environments. Ideal for commercial facilities, government buildings, and institutions requiring maximum durability and tamper resistance, this deadbolt solves the critical need for reliable perimeter security where standard locks fall short.
Available with conventional cylinder, full-size interchangeable core, or small format interchangeable core (SFIC) cylinder options to match your keying system. As an authorized Schlage dealer, E.D. Locks provides expert guidance on cylinder selection, master key compatibility, and proper installation. Contact our sales team at sales@edlocks.com or 1-877-207-6067 for detailed specification sheets and finish options.
