Medeco 11R52W Maxum Residential Double Cylinder Deadbolt, Biaxial, G3 Keyway - UL 437 Listed, BHMA Grade 1

Medeco 11R52W Maxum Residential Double Cylinder Deadbolt, Biaxial, G3 Keyway — UL 437 Listed & BHMA A156.5 Grade 1 Certified

The Medeco Maxum Residential Double Cylinder Deadbolt (Model 11R52W) is a heavy-duty, high-security deadbolt engineered for residential applications demanding the highest level of protection. Featuring Biaxial cylinder technology with the G3 Keyway, this deadbolt is UL 437 Listed and BHMA A156.5 Grade 1 Certified, delivering unmatched resistance against unauthorized key duplication, bumping, picking, drilling, wrenching, and physical attack. A solid 1" hardened steel bolt housed in heavy-gauge tubular steel 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.

Key Features

• Solid 1" Hardened Steel Bolt: A full 1" hardened steel bolt in heavy-gauge tubular steel housing provides maximum defense against physical attack, including crowbar and kick-in attempts.
• 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 broad residential compatibility.
• Medeco 4 (M4) Key Control: Patent-pending Medeco 4 design provides a utility patent protecting against unauthorized key duplication, including deterrence of 3D-printed key copies via a patent-pending movable element in the key.
• Biaxial Cylinder Technology with G3 Keyway: Rotating pins and special angled key cuts add multiple dimensions of security, dramatically increasing key combinations and enabling some of the largest master key systems in the industry.
• Drill & Pick Resistance: Hardened steel inserts, strategically placed drill pins, and solid-brass construction provide maximum drill and pick resistance per UL 437 standard.
• Steel Shroud & High-Security Strike Plate: Steel shroud over bolt protects against "ice pick" type attacks; included high-security strike plate features a special box design with 2" screws anchoring directly to the building structure to prevent kick-in attacks.
• Master Keying Capabilities: M4 deadbolts can be master keyed into systems including M4, M4 BiLevel, and M4 CLIQ keys and cylinders, supporting extremely large key systems.
• Available Finishes: Offered in 14 finishes including Bright Brass (05), Satin Brass (06), Antique Brass (09), Satin Brass Blackened (10), Bright Bronze (11), Satin Bronze (12), Oil Rubbed Bronze (13), Bright Nickel (18), Satin Nickel (19), Antique Nickel (20), Black (22), Dark Bronze (24), Bright Chrome (25), and Satin Chrome (26).

Certifications & Compliance

• UL 437 Listed — Protection against picking and drilling attacks
• BHMA A156.5 Grade 1 Certified Deadbolt
• ANSI/BHMA A156.30 Certification — Key control and unauthorized duplication protection
• ANSI/BHMA A156.36 Grade 1 Listed Cylinders for high security
• ANSI A115.13 Door Prep Compatibility (2 1/8" crossbore, 1" edge bore)

Technical Specifications

• Series: Maxum® Residential Deadbolt
• Cylinder Technology: Medeco Biaxial
• Pinning: 5 or 6-Pin
• Keyway: G3 Keyway
• Certification: ANSI/BHMA A156.36 Grade 1 rated hardware platform
• Bolt: 1" solid hardened-steel bolt in heavy-gauge steel housing
• 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

• Residential Entry Doors Requiring High-Security Key Control
• Single-Family Homes with Master Key System Requirements
• Multi-Unit Residential Properties with Controlled Access Needs
• Upscale Residential Communities Demanding Grade 1 Protection
• Vacation and Secondary Residences Requiring Unauthorized Duplication Deterrence
• Home Offices and Private Studios with Sensitive Access Requirements
• Residential Applications Requiring UL 437 Listed Security Hardware

Why Medeco?

Medeco Maxum deadbolts are built to the most rigorous security standards available, combining a solid 1" hardened steel bolt in heavy-gauge tubular steel housing with Biaxial cylinder technology and the patent-pending Medeco 4 key control system. UL 437 Listed and BHMA A156.5 Grade 1 Certified, the Maxum is engineered for residential environments where protection against physical attack, picking, drilling, and unauthorized key duplication is non-negotiable.