Medeco 11C63W Maxum Commercial Double Cylinder Deadbolt, Biaxial, 6-Pinned, G3 Keyway with Captive Key

Medeco 11C63W Maxum Commercial Double Cylinder Deadbolt, Biaxial, 6-Pinned, G3 Keyway with Captive Key

The Medeco Maxum 11C63W is a heavy-duty commercial double cylinder deadbolt engineered for maximum security in demanding applications. Built with solid-brass construction and Biaxial cylinder technology, this 6-pinned deadbolt features a G3 keyway and captive key function — allowing the inside cylinder to convert to a thumbturn for easy egress when the facility is occupied, then quickly return to double-cylinder mode when unoccupied. Designed to fit doors 1 3/8" to 2 1/2" thick with a standard 2 1/8" crossbore and 1" edge bore (ANSI A115.13 prep), it meets ANSI/BHMA A156.36 Grade 1 and is UL 437 listed for high-security cylinder performance.

Key Features

• Door Thickness Compatibility: Fits doors 1 3/8" to 2 1/2" thick with a standard 2 1/8" crossbore and 1" edge bore (ANSI A115.13 prep) for straightforward installation.
• Captive Key / Convertible Function: The captive key converts the inside cylinder to a thumbturn for easy exit when the facility is occupied; a quick conversion returns it to double-cylinder mode to guard against unauthorized entry when unoccupied.
• Biaxial Key Control (Medeco 4): Patent-pending key control protects against unauthorized key duplication; special angle-cut keys require a dedicated cutting machine and access to Medeco-specific blanks, available in a variety of restriction levels.
• Protection Against 3D Printing: A patent-pending movable element in the key deters unauthorized 3D-printed copies of keys or blanks, providing a modern layer of security against emerging threats.
• Picking, Bumping & Physical Attack Resistance: M4 cylinders use cylinder side pins, a shuttle lift pin, and a movable key element to engage a sidebar that prevents the key from turning until elements are rotated and aligned correctly — protecting against bumping, picking, and other attacks.
• Solid-Brass Drill Protection: Solid-brass construction combined with strategically placed drill pins delivers maximum resistance against drilling and prying attacks.
• Master Keying Capabilities: M4 deadbolts can be master keyed into a system that includes M4, M4 BiLevel, and M4 CLIQ keys and cylinders, supporting extremely large keying systems.
• Heavy-Duty Construction: BHMA-certified Grade 1 performance passes the highest industry standards, backed by solid-brass body construction for long-term commercial reliability.

Certifications & Compliance

• ANSI/BHMA A156.36 Grade 1 Certified
• UL 437 Listed — High Security Cylinders
• BHMA Certified Grade 1 — Highest Industry Standard

Technical Specifications

• Series: Maxum® Commercial Deadbolt
• Cylinder Technology: Medeco Biaxial
• Pinning: 6-Pin
• Keyway: G3 Keyway
• Cylinder Format: Fixed Cylinder
• Certification: ANSI/BHMA A156.36 Grade 1 rated hardware platform
• Door Thickness: Fits doors 1-3/8" to 2-1/2" thick
• Door Prep: Standard 2-1/8" crossbore, 1" edge bore (ANSI/BHMA A115.13)
• Construction: Solid-brass cylinder construction with hardened steel inserts
• Warranty: 2-year manufacturer's warranty

Typical Applications

• Commercial Office Buildings
• Healthcare Facilities and Hospitals
• Educational Institutions and Schools
• Retail Establishments and Restaurants
• Multi-Tenant Residential and Apartment Buildings
• Government and Municipal Buildings
• High-Security Facilities Requiring Key Control Programs

Why Medeco?

Medeco Maxum deadbolts are built from solid brass with Biaxial cylinder technology, UL 437 listing, and ANSI/BHMA A156.36 Grade 1 certification — delivering a level of physical attack resistance, key control, and anti-duplication protection that sets the standard for high-security commercial deadbolts. Engineered for facilities where unauthorized entry, key copying, and physical attacks are genuine concerns, the Maxum 11C63W provides professional-grade security performance you can rely on.