MUL-T-LOCK Cronus-Adonis Grade 2 Knob Lockset (Ball Style) Rotary Hopper Depository Safe Recessed curvature provides virtually airtight

Recessed curvature provides virtually airtight construction preventing smoke damage and water damage

If that weren't enough

Combined together with a MUL-T-LOCK Rim Cylinder this deadlock can be supplied either in Single Cylinder configuration with a Thumbturn on the inside or in Double Cylinder Configuration

CORBIN CL3900 (Use manufacturers original stabilizing sleeve and tailpiece w/ Mul-T-Lock part # PCY-KIK-SPACE1)

MUL-T-LOCK Cronus-Adonis Grade 2 Knob Lockset (Ball Style) Rotary Hopper Depository Safe Recessed curvature provides virtually airtightMUL T LOCK's Adonis cylindrical locksets are designed to provide superior door protection with uncompromised key control. Each Adonis Lockset is fitted with a MUL T LOCK Key In Knob and available in a Knob (Ball or Plym) Design or ADA (America Disabilities Act) Compliant Lever Design. Various functions are available for just about any need. Like all MUL T LOCK Products, the Adonis line of Locksets is protected by MUL T LOCK's Limited Lifetime