Prep less interchangeable core enables quick core replacement for reduced maintenance
High-strength steel alloy construction resists sawing and kick-in attacks for superior security
ANSI function E0171 allows deadbolt to be thrown only by key outside or thumbturn inside for flexible access
Metal shield protects bolt from ice pick attacks through the door
Hardened steel ball bearings protect mounting bolts from drill attacks
Summarized by Shop
Schlage B663B Classroom Deadbolt, 2-3/4" Backset, (SFIC) Small Format Interchangeable Core Prep, Less Core
Schlage’s toughest and highest grade heavy-duty Grade 1 commercial deadbolt. Choose the B660 for Grade 1 security in high-traffic commercial applications.
ANSI Function: E0171– Deadbolt thrown only by key outside; retracted by key ou