Medeco 11C63W Maxum Commercial...
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$491.00
$361.09
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

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Model: MED-11C631W-26-G3P
$491.00
$361.09
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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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.

Manufacturer Resources

Medeco Product Catalog

Product Specs

Product Group:
Mechanical Locks
Series:
Maxum Series
Subcategory:
Deadbolts
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Keyed Function:
Double Cylinder
Commercial/Residential:
Commercial
Keyed:
Yes
Grade:
Grade 1
Duty Level:
Heavy Duty
Technology:
Biaxial
Lock Function:
Deadbolt
Product Attribute:
Deadbolts
Product Model:
11C63W
Product Function:
Double Cylinder
Keyway Options:
G3 Keyway
Product Category:
Mechanical Locks
Department:
Door Hardware

Medeco MED-11C631W-26-G3P – Frequently Asked Questions

1) Will the Medeco Maxum 11C63W deadbolt fit a 2 inch thick door?
Yes. The Maxum 11C63W covers doors from 1-3/8 inches all the way to 2-1/2 inches thick, which is a wider range than most commercial deadbolts hold. Door prep is the standard 2-1/8 inch crossbore with a 1 inch edge bore per ANSI/BHMA A115.13, so it drops into an existing bored deadbolt prep on most commercial doors. Backset is ordered as either 2-3/8 inch or 2-3/4 inch.
2) What does the captive key function on the Medeco 11C63W actually do?
It lets one deadbolt serve two operating modes. With the captive key in the inside cylinder, the inside turns like a thumbturn, so occupants can exit without hunting for a key while the building is occupied. Pull the key and it reverts to true double cylinder, glass side and all, for when the space is empty. That is the reason a facility with glass in or beside the door specifies this instead of a fixed cylinder x thumbturn deadbolt. Check your local egress code before relying on double cylinder mode on a required exit door.
3) Which backset do I order for a Medeco Maxum deadbolt, and what is the faceplate choice about?
Two backsets are offered, 2-3/8 inch and 2-3/4 inch, and each comes with a 1 inch faceplate, a 1-1/8 inch faceplate, or drive-in. Measure from the door edge to the center of the crossbore: 2-3/8 and 2-3/4 inches are the two standard bores. Match the faceplate to the mortise already cut in the door edge, or take drive-in if the edge is unmortised. There is also a Less Bolt Assembly option when you are reusing a bolt already in the door or ordering the bolt separately.
4) Can the Medeco 11C63W be master keyed into an existing Medeco system?
Yes, if that system is on the M4 platform. M4 deadbolts master key into systems built from M4, M4 BiLevel and M4 CLIQ keys and cylinders, which is what lets a campus run one very large keying hierarchy across mechanical and electronic openings. The 11C63W is 6-pinned on the G3 keyway with a Biaxial cylinder, so your keying schedule has to be written to that keyway. Order it Keyed Different, Keyed Alike, or to a specific keycode.
5) What certifications does the Medeco Maxum commercial deadbolt carry?
ANSI/BHMA A156.36 Grade 1 certified, and UL 437 listed for high security cylinders. Those are two different things and MRO buyers need both: Grade 1 is the operational and strength rating on the deadbolt itself, while UL 437 covers the cylinder's resistance to picking, drilling and forced entry. Most Grade 1 deadbolts on the market carry the first and not the second.
6) Can I put a Medeco Maxum deadbolt on an apartment door that already has a Grade 2 deadbolt in it?
Usually yes, and without new holes. The Maxum 11C63W uses the standard 2-1/8 inch crossbore and 1 inch edge bore of ANSI/BHMA A115.13, which is the same prep the common Grade 2 tubular deadbolts sit in, so a swap from something like an Arrow DBX61 or a Dexter DB2000 is a straight cylinder-for-cylinder change as long as the backset matches, 2-3/8 inch or 2-3/4 inch. Confirm the existing backset before ordering. Going from single cylinder to the 11C63W does change the inside from a thumbturn to a keyed cylinder.
7) What is the closest Grade 1 double cylinder deadbolt to the Medeco 11C63W Maxum if a high-security keyway is not required?
The Design Hardware D1 Series double cylinder deadbolt is the nearest straight equivalent on grade and function - it is a Grade 1, double cylinder deadbolt rated extra heavy duty for a 1-3/4 inch door. The Dexter DB1000 Series double cylinder is also Grade 1 double cylinder and covers doors 1-3/8 inch to 1-7/8 inch thick. Where the Medeco 11C63W differs is the cylinder: it is a Biaxial 6-pin cylinder in the G3 keyway, carrying the key control and restricted-blank program that comes with it, and it takes doors 1-3/8 inch to 2-1/2 inch thick. If the opening needs key control, the Medeco is the one that carries it; if the job only calls for Grade 1 double cylinder performance on a standard door, the D1 or DB1000 covers it.
8) The door is thicker than 1-3/4 inches - which double cylinder deadbolts will actually fit?
Door thickness is where most double cylinder deadbolts run out of range. The Medeco 11C63W Maxum is built for doors 1-3/8 inch to 2-1/2 inch thick on a standard 2-1/8 inch crossbore and 1 inch edge bore. Among the alternatives, the Deltana 7312KA2 double cylinder covers 1-3/8 inch to 2 inch, and the Dexter DB1000 Series double cylinder stops at 1-7/8 inch. The Design Hardware D1 Series double cylinder is listed for 1-3/4 inch. For anything above 2 inches, the 11C63W is the one in the set with the range to reach it.
9) Code will not allow a key on the inside - what replaces the Medeco 11C63W on an egress door?
Where the authority having jurisdiction requires free egress and a keyed inside cylinder is not acceptable, a cylinder by thumbturn deadbolt is the substitution. The Falcon D111 is a Grade 1 heavy duty deadbolt in the cylinder by thumbturn function with an adjustable backset, the Delaney LM Series is a Grade 1 cylinder by thumbturn supplied less core, and the Accentra D111 is a Grade 1 cylinder by thumbturn with a 2-3/8 inch backset for doors 1-3/8 inch to 1-3/4 inch. Note that the Medeco 11C63W Maxum carries a captive key function, so the inside cylinder converts to a thumbturn while the facility is occupied and returns to double-cylinder mode when it is not - worth confirming against the code requirement before switching part numbers.
10) Do I order the Medeco 11C63W pinned or sub-assembled?
Pinned means the cylinder arrives keyed and ready to hang. Sub-assembled ships the cylinder unpinned so a locksmith or in-house shop can pin it to your existing Medeco system on site, which is what you want if you are keying it into a master system yourself rather than sending the schedule ahead. Pair that with the keying choice, Keyed Different, Keyed Alike, or to a supplied keycode.
11) Is the Medeco Maxum deadbolt worth it against drilling and key copying?
That is what you are buying it for. The body is solid brass with hardened steel inserts and drill pins placed to defeat a drill attack. On the key side, the Biaxial cylinder uses angle-cut keys that need a dedicated cutting machine and Medeco blanks, so a tenant cannot walk into a hardware store and get a copy. M4 cylinders add side pins, a shuttle lift pin and a movable key element working a sidebar, which is the mechanism that stops bumping and picking, and the movable element also frustrates 3D-printed key copies.
12) What is the difference between a double cylinder deadbolt and a classroom or single cylinder deadlock for a school?
A double cylinder deadbolt like the Medeco Maxum 11C63W needs a key on both sides, which is why it is used where glass sits next to the lock but is often restricted on egress doors. For a classroom you generally want a different function: the Falcon D111 is a Grade 1 heavy duty classroom deadbolt, and the Hager 3118 is a Grade 1 classroom deadbolt on a Schlage C keyway with a 6-pin cylinder. For a straight deadlock in a commercial door, the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock covering 1-3/4 inch to 2-1/4 inch doors.
13) What is the Less Bolt Assembly option on the Medeco Maxum deadbolt for?
It ships the deadbolt without the bolt and strike hardware. Locksmiths order it when the existing bolt in the door is sound and only the cylinder and trim are being upgraded, or when the bolt is being sourced to a specific backset and faceplate separately. If you are installing into a bare door, do not take this option, pick a backset and faceplate combination instead, 2-3/8 inch or 2-3/4 inch with a 1 inch or 1-1/8 inch faceplate, or drive-in.
14) What is a lighter-duty double cylinder deadbolt than the Medeco 11C63W for a lower-traffic opening?
Stepping down from the Medeco 11C63W Maxum, which is a Grade 1 heavy duty double cylinder deadbolt, the Delaney LU Series double cylinder is Grade 2, the Hager 3214 double cylinder is Grade 2 with a Schlage C keyway and a fire rating, and the Callan Model 210S double cylinder is Grade 3. All three keep the key-both-sides function the Medeco provides; they differ in grade and in cylinder, since the Medeco uses a Biaxial 6-pin G3 cylinder rather than a standard keyway.
15) Can a Corbin Russwin DL3011 or DL3211 deadlock be used in place of the Medeco 11C63W Maxum?
Not as a like-for-like swap. The Corbin Russwin DL3011 and DL3211 are Grade 1 cylindrical deadlocks in a cylinder by blank plate configuration, so they are keyed on one side only with no operating trim on the other. The Medeco 11C63W Maxum is a double cylinder deadbolt, keyed on both faces. The DL3011 covers doors 1-3/4 inch to 2-1/4 inch and the DL3211 is listed for 1-3/4 inch, while the 11C63W takes 1-3/8 inch to 2-1/2 inch. Use the DL3000 or DL3200 when the inside face should have no key and no turn; use the 11C63W when both sides must be keyed.
16) Which double cylinder deadbolts look like a match for the Medeco 11C63W but are residential trim rather than commercial hardware?
Several double cylinder deadbolts serve a different market. The Baldwin Estates 8011 contemporary 1-5/8 inch double cylinder, the Baldwin Reserve contemporary round and square double cylinder deadbolts, and the Emtek 8323 Modern Disc brass double cylinder all provide key-both-sides operation with decorative trim. The Medeco 11C63W Maxum is specified as commercial heavy duty at Grade 1, with a Biaxial 6-pin G3 cylinder. If the opening is a storefront, tenant entry, or institutional door under a keying program, the 11C63W is the commercial specification; the Baldwin and Emtek deadbolts suit finish-driven residential and light architectural work.
17) What is the difference between the Medeco 11C63W Maxum and an electronic or keypad deadbolt like the Codelocks CL2200 or Delaney KP400?
They solve access differently. The Medeco 11C63W Maxum is a mechanical double cylinder deadbolt with a Biaxial 6-pin G3 cylinder that can be master keyed into an M4, M4 BiLevel, and M4 CLIQ system. The Codelocks CL2200 is a medium duty electronic surface deadbolt, the Codelocks CL2210 is an electronic mortise deadbolt, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, and the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override. Choose the electronic units when credentials need to be issued and revoked without recutting keys; choose the 11C63W when the facility runs a mechanical key control program and wants no batteries in the door.
18) Is there a Grade 1 deadbolt alternative to the Medeco 11C63W that carries a fire rating for a labeled door?
The Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch, in the cylinder by thumbturn function. The Hager 3118 is a Grade 1 classroom deadbolt with a fire rating, a Schlage C keyway and a 6-pin cylinder, for doors 1-3/8 inch to 1-3/4 inch. Both are keyed outside with a turn or blank inside rather than keyed both sides. The Medeco 11C63W Maxum is the double cylinder, Grade 1 heavy duty option with the Biaxial 6-pin G3 cylinder and a 1-3/8 inch to 2-1/2 inch thickness range - specify it where both faces must be keyed and confirm the door label requirements with the door manufacturer.
19) Which deadbolt takes a small format interchangeable core instead of a fixed cylinder like the Medeco 11C63W?
The Medeco 11C63W Maxum uses a fixed Biaxial cylinder in the G3 keyway, pinned or supplied sub-assembled. If the facility standardizes on interchangeable cores so a locksmith can rekey by pulling the core, the Arrow E61 is a Grade 2 single cylinder deadlock with SFIC prep supplied less core for doors 1-3/8 inch to 1-3/4 inch, and the Deltana CL200LAIC is a Grade 2 single cylinder deadbolt prepped for an interchangeable core with a 2-3/4 inch backset. Both are single cylinder, so an inside key is given up in exchange for the core format.
20) The opening needs a 2-3/4 inch backset - which deadbolts cover it besides the Medeco 11C63W Maxum?
The Medeco 11C63W Maxum is ordered in 2-3/4 inch and 2-3/8 inch backsets, each with a 1 inch or 1-1/8 inch faceplate or a drive-in bolt, and can also be ordered less bolt assembly when the existing bolt is being reused. Among alternatives, the Deltana CL200LA is a Grade 2 single cylinder deadbolt with a 2-3/4 inch backset, and the Deltana CL200LAIC is the same backset in an interchangeable core version. Where the backset is not yet confirmed, the Falcon D111 Grade 1 and the Cal-Royal ED500 Grade 3 both use an adjustable backset.
21) Does a mortise deadbolt work where a Medeco 11C63W Maxum is specified?
Only if the door is prepped for one. The Medeco 11C63W Maxum is a bored deadbolt installed in a standard 2-1/8 inch crossbore with a 1 inch edge bore to ANSI/BHMA A115.13. A mortise unit needs a pocket cut into the door edge instead: the Dormakaba D900 is a small case mortise deadbolt in cylinder by turn with SC keyways, the Dormakaba M1000 Series M1960 is a single cylinder deadbolt in cylinder by turn with no trim, and the Emtek 2050 and 2051 are European mortise deadbolts with an integrated roller latch in square and round trim. On a door already bored for a tubular deadbolt, the 11C63W drops into the existing prep.
22) Can I match a Medeco Maxum deadbolt to the finish on the rest of my door hardware?
Thirteen finishes are offered, covering the common commercial specs, 626 satin chrome, 625 bright chrome, 605 bright brass, 606 satin brass, 613 dark bronze oil-rubbed, 619 satin nickel and 622 flat black, plus 20 antique nickel, 609 antique brass, 611 bright bronze, 612 satin bronze, 618 bright nickel and 624 dark bronze. Order by the BHMA number rather than the finish name and the whole opening will match.
23) Is the Baldwin 8BR0618001 deadbolt spacer or the BEST 8T tube an alternative to the Medeco 11C63W Maxum?
No - neither is a lock. The Baldwin Reserve 8BR0618001 is a deadbolt spacer for a double cylinder application, and the BEST 8T is the tube component of a T Series tubular deadbolt. Both are pieces that go into or alongside an assembly. The Medeco 11C63W Maxum is a complete double cylinder deadbolt with cylinders, bolt and strike hardware ordered by backset and finish. Order the spacer or tube only to service an assembly already in the door.
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Does the Medeco MED-11C631W-26-G3P come with a warranty?
Absolutely. The Medeco MED-11C631W-26-G3P is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Medeco MED-11C631W-26-G3P?
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