Medeco 11C9 Maxum Commercial S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$225.00
$220.18
Medeco Medeco Maxum Commercial SFIC Single Cylinder 6-Pinned Deadbolt, Less Core, With Bolt MED-DEADBOLT-11C9

Medeco 11C9 Maxum Commercial SFIC Single Cylinder 6-Pinned Deadbolt, Less Core, With Bolt - High Security ANSI Grade 1

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Model: MED-11C901-26
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$225.00
$220.18
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Medeco Maxum DEADBOLT-11C9 Commercial SFIC Single Cylinder 6-Pinned Deadbolt, Less Core, With Bolt — High Security ANSI Grade 1

The Medeco Maxum Commercial SFIC Single Cylinder 6-Pinned Deadbolt delivers maximum strength, reliability, and key control for demanding commercial and residential applications. Engineered as part of the Maxum Series, this heavy-duty deadbolt is UL 437 Listed and BHMA A156.36 Grade 1 certified, and fits doors ranging from 1-3/8" to 2-1/2" thick. Door preparation requires a 2-1/8" crossbore and 1" edge bore (ANSI A115.13 compliant), making it compatible with standard commercial door prep. Supplied less core with bolt included, this unit is designed for SFIC (Small Format Interchangeable Core) installations requiring 6-pin cylinder configurations.

Key Features

  • Door Thickness Compatibility: Fits doors from 1-3/8" to 2-1/2" thick, accommodating a wide range of commercial and residential door constructions.
  • Standard Door Preparation: Requires a 2-1/8" crossbore and 1" edge bore per ANSI A115.13, ensuring compatibility with industry-standard door prep.
  • Patented Key Control: Patent-pending Medeco 4 key control system prevents unauthorized key duplication, providing superior access management across entire properties.
  • 3D Printing Defense: The key incorporates a movable element that deters cloning via 3D printing technology, protecting against modern duplication methods.
  • Advanced Cylinder Protection: M4 cylinders feature side pins, a shuttle lift pin, and rotating elements that block key turning unless all elements align, delivering robust picking and bumping protection.
  • Drill-Resistant Construction: Solid brass construction and drill-resistant components prevent compromise through forced entry attempts.
  • Master Keying Flexibility: Compatible with M4, M4 BiLevel, and M4 CLIQ systems for complex master keying needs, supporting keyed-alike standardization across entire properties.
  • Heavy-Duty Duty Level: Rated Heavy Duty for high-traffic commercial environments where long-term reliability is essential.

Certifications & Compliance

  • UL 437 Listed
  • BHMA A156.36 Grade 1 Certified
  • ANSI Grade 1
  • ANSI A115.13 Door Preparation Compliant

Technical Specifications

  • Series: Maxum® Commercial Deadbolt
  • Cylinder Technology: Medeco 4 (M4)
  • Pinning: 6-Pin
  • Keyway: Factory-specified
  • Cylinder Format: Small Format Interchangeable Core (SFIC)
  • Certification: UL 437 Listed; ANSI/BHMA A156.36 Grade 1 (M4)
  • 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 Institutions and Hospitals
  • Educational Facilities and Schools
  • Retail Establishments and Restaurants
  • Multi-Unit Residential and Apartment Properties
  • Government and Municipal Buildings
  • Residential Front and Back Doors Requiring High-Security Access Control

Why Medeco?

Medeco Maxum deadbolts are built to the highest standards of physical security, combining solid brass construction, drill-resistant components, and UL 437 Listed, BHMA A156.36 Grade 1 certified performance. The M4 cylinder system — featuring side pins, a shuttle lift pin, and rotating elements — provides industry-leading picking, bumping, and key-duplication resistance. For commercial and residential installations where dependable, high-security performance is non-negotiable, the Medeco Maxum is the professional-grade choice.

Manufacturer Resources

Medeco Product Catalog

Product Specs

Product Group:
Mechanical Locks
Series:
Maxum Series
Subcategory:
Deadbolts
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Commercial/Residential:
Commercial
Keyed:
Yes
Grade:
Grade 1
Duty Level:
Heavy Duty
Keyed Function:
Non-Keyed
Lock Function:
Deadbolt
Product Attribute:
Deadbolts
Tags:
medeco maxum 11tr503 19 doorlock, medeco deadbolts
Product Model:
11C4
Product Function:
Cylinder x Thumbturn
Product Category:
Mechanical Locks
Department:
Door Hardware

Medeco MED-11C901-26 – Frequently Asked Questions

1) Does the Medeco Maxum 11C9 deadbolt come with a core, or do I need to order one separately?
The 11C9 Maxum ships less core, with the bolt included. You supply the small format interchangeable core separately, in a 6-pin Medeco 4 configuration, which is how most facilities buy it when they already run an SFIC keying system and want the core pinned into their existing hierarchy. If you are not running SFIC and just want a working keyed deadbolt out of the box, this is the wrong part number for you.
2) Is the Medeco Maxum 11C9 a replacement for an existing bored deadbolt on a commercial door?
On a door already prepped to ANSI/BHMA A115.13 with a 2-1/8 inch crossbore and 1 inch edge bore, yes, provided the backset matches at 2-3/8 or 2-3/4 inch. That is the standard commercial deadbolt prep, so most retrofits are a swap rather than a redrill. Doors bored for a mortise deadbolt or for a European-style mortise case, such as the Emtek 2050, are a different prep entirely and the Maxum will not go in without new door work.
3) Which backset and faceplate do I order for a Medeco Maxum deadbolt?
Six bolt options are offered, and you have to pick one on the order. Backset is 2-3/8 or 2-3/4 inch, and each backset comes with a 1 inch faceplate, a 1-1/8 inch faceplate, or drive-in with no faceplate at all. Measure from the door edge to the center of the crossbore for the backset, then match the faceplate to the mortise already cut in the door edge. Drive-in is the one to take on a door with no edge mortise, common on metal doors and on replacements where you do not want to chisel.
4) Is the Medeco Maxum deadbolt rated for high traffic commercial use?
Heavy Duty, ANSI/BHMA A156.36 Grade 1, and UL 437 Listed. Grade 1 is the top commercial tier for a deadbolt, and UL 437 is the attack-resistance listing that covers picking and drilling, not just cycle life. That combination is what specifications for healthcare, education, and government openings typically call out, and it is why the Maxum shows up on exterior and perimeter doors rather than interior offices.
5) Can I key a Medeco Maxum deadbolt into the master key system I already run on my building?
It works with M4, M4 BiLevel, and M4 CLIQ systems, so if your property is already on a Medeco 4 hierarchy the Maxum cores pin into the same system and can be keyed alike across doors. Keyways are factory-specified, so the order has to name the keyway your system uses. If your building runs a different manufacturer's SFIC keying, a Medeco core will not cross into it.
6) What is the closest Grade 1 alternative to the Medeco Maxum 11C9 deadbolt if a different brand is required on the job?
The Delaney LM Series Grade 1 single cylinder deadbolt is the nearest match. Like the Maxum 11C9, it is a Grade 1 cylinder x thumbturn deadbolt supplied less core, so it accepts an interchangeable core the same way the 11C9 does. The difference is the cylinder platform: the Maxum uses the Medeco M4 cylinder with side pins, a shuttle lift pin and rotating elements, and is UL 437 Listed, while the LM Series is a conventional less-core deadbolt. If the specification is written for patented key control, the LM Series does not carry it.
7) Which deadbolt takes an SFIC core besides the Medeco Maxum 11C9?
Two options accept interchangeable cores. The Arrow E61 26D IC is a Grade 2 single cylinder deadlock prepped for SFIC and supplied less core, fitting doors 1-3/8 inch to 1-3/4 inch. The Deltana CL200LAIC is a Grade 2 single cylinder deadbolt with an interchangeable core prep, non-cylinder, on a 2-3/4 inch backset. Both are Grade 2; the Maxum 11C9 is Grade 1 and heavy duty, and it fits doors from 1-3/8 inch through 2-1/2 inch, so it covers thicker leaves than the Arrow E61 does. All three ship less core, so the core is ordered separately in each case.
8) The opening needs a key on both sides instead of a thumbturn. What replaces the Medeco Maxum 11C9?
The Maxum 11C9 is a cylinder x thumbturn deadbolt, so it cannot serve a double keyed opening. For key both sides, the Design Hardware D1 Series is a Grade 1 extra heavy duty double cylinder deadbolt for 1-3/4 inch doors, and the Dexter DB1000 double cylinder is a Grade 1 unit for doors 1-3/8 inch to 1-7/8 inch. The Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock in cylinder x blank for doors 1-3/4 inch to 2-1/4 inch where no operating trim is wanted on the inside face. Local code often restricts double cylinder deadbolts on required egress doors, so confirm the opening before ordering.
9) What deadbolt should be used on a fire rated door instead of the Medeco Maxum 11C9?
Where the paperwork calls for a fire rated deadbolt, the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder, fire rated, fitting doors 1-3/8 inch to 1-3/4 inch. The Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch. Hager also lists the Grade 2 3215 single cylinder with a 1 inch throw and the Grade 2 3115, both fire rated for the same 1-3/8 inch to 1-3/4 inch range, where Grade 2 is acceptable. The Maxum 11C9 is UL 437 Listed, which is a cylinder attack rating rather than a fire rating.
10) Which deadbolts fit doors thicker than 2 inches like the Medeco Maxum 11C9 does?
The Maxum 11C9 covers doors 1-3/8 inch through 2-1/2 inch, which is the widest range among commercial deadbolts of this type. The Corbin Russwin DL3011 Grade 1 cylindrical deadlock reaches 1-3/4 inch to 2-1/4 inch. Most alternatives stop well short: the Dexter DB1000 tops out at 1-7/8 inch, the Deltana 7312KA2 Grade 3 double cylinder at 2 inch, and the Accentra D111, Dexter DB2000 and Hager 3115 all end at 1-3/4 inch. On a thick or insulated commercial leaf, the choice narrows to the Maxum 11C9 or the DL3011.
11) What is the difference between a single cylinder and a double cylinder deadbolt, and which is the Medeco Maxum 11C9?
The 11C9 is single cylinder: keyed cylinder on the outside, thumbturn on the inside. Anyone inside can throw or retract the bolt by hand with no key, which matters for egress. A double cylinder takes a key on both faces and is used where there is glass beside the door and you do not want an arm reaching through to the turn, but it traps occupants without a key and many jurisdictions restrict it on required exits. If you need the two-key version instead, ZenSupply carries the Design Hardware D1 Series Grade 1 double cylinder deadbolt and the Dexter DB1000 Series Grade 1 double cylinder.
12) I need a Grade 1 less-core deadbolt but not the high security key control. What else is there?
Two straightforward alternatives ZenSupply stocks: the Delaney LM Series Grade 1 single cylinder less core deadbolt in dull chrome (US26D), and the Arrow E61 Grade 2 single cylinder deadlock with SFIC prep less core, which covers 1-3/8 to 1-3/4 inch doors. Both accept a core you supply the same way the Maxum does. What you give up is the Medeco 4 cylinder itself, the side pins, shuttle lift pin, and rotating elements that resist picking and bumping, along with the patented key control that stops keys being copied off site.
13) Why would I pay for a Medeco deadbolt instead of a standard Grade 1 commercial deadbolt?
Key control is the reason, not the bolt. The Medeco 4 system is patented, so keys cannot be cut at a hardware store or a kiosk, and the key carries a movable element that defeats duplication by 3D printing. On a property where keys walk with departing staff or turned tenants, that is the difference between rekeying a building and not. The cylinder body is solid brass with hardened steel inserts and drill-resistant components. If the threat you are actually managing is weather and wear rather than key copying, a Grade 1 deadbolt like the Cal-Royal CRB800 or the Dexter DB1000 single cylinder does the mechanical job.
14) What is a lower-cost Grade 1 deadbolt to use where patented key control is not required?
For a Grade 1 opening that does not need a restricted keyway, the Dexter DB1000 single cylinder deadbolt is a Grade 1 cylinder x thumbturn unit fitting doors 1-3/8 inch to 1-7/8 inch, and the Design Hardware D1 Series is a Grade 1 extra heavy duty deadbolt for 1-3/4 inch doors in a double cylinder configuration. The Falcon D111 is a Grade 1 heavy duty deadbolt with an adjustable backset. All are conventional keyed deadbolts, so keys can be duplicated at any counter; the Maxum 11C9 uses the Medeco M4 system with patented key control specifically to prevent that.
15) Is the Codelocks CL200 surface deadbolt a substitute for the Medeco Maxum 11C9?
No. The Codelocks CL200 is a surface mounted deadbolt with key override rated light duty, and the CL2200 is an electronic surface deadbolt rated medium duty. Surface mounted units apply to the face of the door rather than through a bore, so they neither reuse the 2-1/8 inch crossbore and 1 inch edge bore the Maxum 11C9 requires nor match its heavy duty Grade 1 rating. They suit an opening with no existing bore or one where drilling is not wanted; they do not fill a Grade 1 commercial deadbolt specification.
16) What is the difference between the Medeco Maxum 11C9 and the Arrow E60 exit deadlock?
They are not the same function. The Arrow E60 is a Grade 2 exit deadlock, non-keyed, with a blank plate on the outside and a thumbturn inside, for doors 1-3/8 inch to 1-3/4 inch. It throws the bolt from inside only and gives no key access from the exterior. The Maxum 11C9 is a keyed cylinder x thumbturn deadbolt, so it operates by key from the outside. If the outside face of the opening is meant to be blind, the E60 is the correct part; if the door must be locked and unlocked from outside, it is not.
17) Which deadbolt has an adjustable backset instead of ordering a fixed 2-3/8 or 2-3/4 inch bolt?
The Maxum 11C9 is ordered with the backset fixed at the bolt option, either 2-3/8 inch or 2-3/4 inch, with a 1 inch or 1-1/8 inch faceplate or drive-in. Where the backset on site is unconfirmed, the Falcon D111 is a Grade 1 heavy duty deadbolt with an adjustable backset, the Cal-Royal ED500 is Grade 3 with an adjustable backset for 1-3/8 inch to 1-3/4 inch doors, and the Brinks Raleigh E2401 is a single cylinder deadbolt with a 4 way adjustable backset. Only the Falcon D111 among these is Grade 1.
18) Is an electronic deadbolt an alternative to the Medeco Maxum 11C9 for a multifamily property?
It changes how the door is credentialed rather than matching it. The Dormakaba Nova-D is an RFID multihousing smart electronic deadbolt and the Saffire LX-D is an RFID electronic deadbolt with Bluetooth and an electronic lock override. The Codelocks CL2210 is an electronic mortise deadbolt, and the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote. These run on credentials and batteries; the Maxum 11C9 is a mechanical deadbolt that keys into M4, M4 BiLevel and M4 CLIQ master key systems, which is what keeps a property on one key hierarchy across doors.
19) What deadbolt has an ADA friendly thumbturn where the Medeco Maxum 11C9 does not suit the user?
The Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn for doors 1-3/8 inch to 1-3/4 inch. It is the choice where the interior turn has to be operable without tight grasping or twisting. It is a Grade 3 residential duty unit and does not accept an interchangeable core, so it does not carry the Grade 1 heavy duty rating or the SFIC keying of the Maxum 11C9. On a facility standardizing on one key system, this is a door by door exception rather than a fleet replacement.
20) Is the BEST 8T tubular deadbolt tube a replacement for the Medeco Maxum 11C9?
No. The BEST 8T is a T Series tubular deadbolt tube component, meaning the bolt assembly on its own rather than a complete deadbolt with trim and cylinder. Ordering it in place of a full deadbolt leaves the job without the outside cylinder housing and inside thumbturn. The Maxum 11C9 ships as a complete SFIC deadbolt with the bolt included, less core. Similarly, the Baldwin 8BR0618001 is a deadbolt spacer and the Arrow 460 is a mortise lock strike, both accessories rather than locks.
21) Which deadbolt suits a classroom security function rather than a standard storeroom deadbolt?
The Falcon D111 is a Grade 1 heavy duty classroom function deadbolt with an adjustable backset, and the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder for doors 1-3/8 inch to 1-3/4 inch. The Corbin Russwin DL2211 is a Grade 1 cylindrical deadlock in classroom function for 1-3/4 inch doors. The Maxum 11C9 is a cylinder x thumbturn deadbolt, so the inside face always has a turn; classroom function locks change where and how the bolt can be thrown, which is often what a school district specifies.
22) What finishes does the Medeco Maxum deadbolt come in, and can I match the lever trim already on my doors?
Thirteen finishes, covering the full standard BHMA range: 605 bright brass, 606 satin brass, 609 antique brass, 611 bright bronze, 612 satin bronze, 613 dark bronze oil-rubbed, 618 bright nickel, 619 satin nickel, 620 is not offered but 20 antique nickel is, 622 flat black, 624 dark bronze, 625 bright chrome, and 626 satin chrome. Because the numbers are the BHMA codes, matching existing hardware is a matter of reading the finish code off what is already on the door. 626 and 613 are the two that turn up most on commercial openings.
23) What Grade 2 deadbolt is used where a Grade 1 high security unit is more than the opening needs?
For interior or lower traffic doors, the Arrow DBX61 is a Grade 2 single cylinder cylinder x thumbturn deadbolt, the Dexter DB2000 is Grade 2 for doors 1-3/8 inch to 1-3/4 inch, the Falcon D211 is a Grade 2 medium duty classroom function deadbolt, and the Cal-Royal CB160 is Grade 2 with a tamper resistant cylinder guard. The Maxum 11C9 is Grade 1 and rated heavy duty for high traffic commercial use, so on a stairwell, storage room or back of house door where the traffic is light, a Grade 2 unit meets the requirement.
How fast can I get the Medeco MED-11C901-26 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Medeco MED-11C901-26 come with a warranty?
Absolutely. The Medeco MED-11C901-26 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-11C901-26?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Medeco MED-11C901-26 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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