BiLevel cylinders offer affordable key control through patent protected keys. For areas that require protection against picking, bumping, drilling, prying, or other forms of attack, UL 437 Listed Medeco³ may be added to the system.

Medeco® is well known for its innovation and use of technology. Did you know Medeco® cylinders retrofit more manufacturers' hardware than any other high security product line? Ultimately, that leads to reduced security costs because there’s no need to replace existing hardware to obtain a single secure system. Plus, Medeco's electronics offer advanced features such as time control, detailed reporting and the ability to add or remove keys instantly. Medeco® ingenuity leads the way with mechanical and electronic formats--all designed to meet a variety of security needs and challenges


Medeco³ High Security Cylinders feature UL437 Listed physical strength components like the triple locking technology for ultimate pick resistance and solid brass construction with strategically placed hardened inserts to thwart drilling attacks.


Mul-T-Lock provides enhanced key control by utilizing patented keys and requiring presentation of a key order card to an authorized dealer for key duplication by a unique locksmith-operated key cutting machine. Also offers enhanced resistance to picking, drilling, bumping and other forms of lock manipulation.

Elite Lock Service offers 206B Interactive®+ keyway. Interactive® key design has long been a distinguishing facet of our commitment to high security. The key’s robust and durable design, coupled with Mul-T-Lock’s Interactive® technology, set the Interactive® key apart from the rest. 


Mul-T-Lock designs, develops and manufactures a wide selection of innovative cylinders - mechanical and electromechanical - that address the evolving security needs of institutions, businesses and homeowners worldwide.


With its truly unique design the MUL-T-LOCK Hercular deadbolt is truly spectacular. The Hercular is reinforced in just about every way possible. From a UL437 Listed Cylinder, to strong latch, to Bolt Bearing Mechanism, the Hercular Deadbolt will stop almost any attempt at forced entry. Strength usually does not mix with Flexibility. Not in the case of the Hercular, since it is the only Grade 1 Deadlock with an adjustable backset.Features:

Medeco® offers three levels of mechanical technology options to meet your individual security needs. From patented key control systems like Keymark x4 and BiLevel to a full high security and key control solution like Medeco³.

The Medeco® Maxum Residential deadbolt exceeds ANSI Grade 1 standard for auxiliary locks and comes in an aesthetically pleasing package. Solid brass, free turning collar and 1/4 inch diameter mounting bolts resist wrenching, prying and hammering attacks. 1 inch throw hardened steel bolt resists sawing and crowbar attacks.

Hardened steel inserts and rotating pins provide drill and pick resistance according to UL 437 standard. The Medeco3 design offers a utility patent that provides protection against unauthorized key duplication.

The Maxum is a UL437 Listed, BHMA A156.5 Grade 1 Certified deadbolt, offering unmatched protection against unauthorized key duplication, bumping attacks, picking, drilling, wrenching, kicking, or other physical abuse. A solid 1'' hardened steel bolt in heavy gauge steel housing provides maximum defense against physical attack.

Control Over Your Keys The locking technology in the Maxum residential deadbolt carries a BHMA A156.30 Certification, giving you assurance that your keys are fully protected from unauthorized duplication as well as a UL 437 Listing for protection against picking and drilling attacks. With this protection, you are assured of knowing exactly who has access to your possessions and loved ones. This deadbolt, like all Medeco Residential locks, can be masterkeyed for maximum flexibility.

Available in many styles  and finishes, the Maxum is available in single and double cylinder functions and in most popular finishes.

The Maxum Residential deadbolt can be ordered with a variety of different cylinder technologies. To compare the mechanical features, see the below chart.

Standard locking systems without utility patent protected keys allow anyone who gains possession of a key to easily and inexpensively make a copy. With an unauthorized duplicate key, a thief has complete access to a building, its physical and intellectual property, and the people inside. BiLevel locking systems ensure that the keys to a facility can only be duplicated by certified Medeco dealers and only with the proper authorization.

Medeco® BiLevel cylinders can tie in with other Medeco® mechanical and eCylinder products for master keying purposes.

 For more information about the ASSA ABLOY complete Security Continuum visit http://www.intelligentopenings.com

Medeco X4
All facilities need patented key control to effectively secure exterior and interior openings.  This strength of integrity allows security managers to have peace of mind when it comes to managing the system.  Unfortunately, instituting a new key system is not always easy....or economical. 

Medeco X4 is the most economic and efficient solution.  Medeco X4 has one of the largest master key capabilities on the market.  This allows facility managers to tie everything together under one key for ease, convenience and efficiency.  Additionally, Medeco X4 easily retrofits into existing systems so installation time is minimal.

Medeco X4 is the perfect security upgrade for small  format interchangeable core (SFIC) installations for Best-style, Prox and iClass systems. In addition to SFIC cylinders, Medeco X4 is also available in many other styles of retrofit cylinders and can be keyed into a single system.   



Interactive®+ - Reliable, double locking mechanism high security. Provides enhanced key control by utilizing patented keys and requiring presentation of a key order card to an authorized dealer for key duplication by a unique locksmith-operated key cutting machine. Also offers enhanced resistance to picking, drilling, bumping and other forms of lock manipulation. The Interactive®+ platform is also available with CLIQ® electromechanical technology. Choose this solution for applications that require physical security and protection against unauthorized key duplication.

ANSI Grade 1 Locking Mechanism
UL Fire Rated Latch
Adjustable Backset (2 3/8", 2 3/4")
UL437 Drill and Pick Resistance Cylinder
Bump Resistant High Security Lock Cylinder
MUL-T-LOCK's Patented Interactive® Key Control System
Limited Lifetime Mechanical Warranty
Cylinder Plug & Bolt Finish: Bright Brass or Satin Chrome
Key Way: 264G
Keys Included: 2 (or 1 if keyed alike)