Medeco Maxum Residential Singl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$296.00
$221.76
Medeco Medeco Maxum Residential Single Cylinder Deadbolt, DL Keyway MED-11R50

Medeco Maxum Residential Single Cylinder Deadbolt, DL Keyway

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Model: 11R503T-05-DLT
$296.00
$221.76
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$296.00
$221.76
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Medeco Maxum® Residential Deadbolt – Grade 1 High Security Deadbolt Lock

The Medeco Maxum® Residential Deadbolt is a premium high security deadbolt engineered for environments demanding superior protection against forced entry and key-based attacks. Featuring the latest Medeco 4 (M4) locking technology, this heavy duty deadbolt combines drill and pick resistance with patented key control and master keying capabilities—making it the top choice for both residential and light commercial applications.

Maximum Strength. Certified Security.

The Maxum deadbolt exceeds performance standards:

  • ANSI/BHMA A156.36 Grade 1 certified

  • UL 437 listed for drill and pick resistance

  • Constructed with a solid 1" hardened steel bolt and heavy-gauge tubular steel housing

  • Steel shroud over the bolt resists ice-pick attacks and wrenching

  • High security strike plate with 2” screws anchors to structural framing for maximum resistance to kick-in attempts

Advanced Key Control

  • Medeco lock cylinders utilize patent-pending technology to prevent unauthorized key duplication

  • Protection against 3D-printed key blanks

  • Angled key cuts and fore/aft pin placement significantly increase key combinations

  • Compatible with Medeco M4 master key systems, including M4 BiLevel* and M4 CLIQ* for large, scalable deployments

Configuration Options

  • Available as single cylinder, double cylinder, or captive key deadbolt

  • Can be ordered with various Medeco lock cylinder technologies to suit specific security requirements

Technical Specifications

  • Fits doors 1-3/8” to 2-1/2” thick

  • Standard 2-1/8” crossbore, 1” edge bore (ANSI A115.13 prep)

  • Includes models such as Medeco Maxum 11TR503 19 (Satin Nickel)

Key Benefits

  • Drill protection with strategically placed hardened steel inserts

  • Bump and pick resistance via M4 cylinder design

  • Master keying capabilities for system-wide control

  • No unauthorized key duplication—certified under BHMA A156.30

Finishes Available

Choose from a wide variety of architectural finishes:

  • 05 – Bright Brass

  • 06 – Satin Brass

  • 09 – Antique Brass

  • 10 – Satin Brass Blackened

  • 11 – Bright Bronze

  • 12 – Satin Bronze

  • 13 – Oil Rubbed Bronze

  • 18 – Bright Nickel

  • 19 – Satin Nickel

  • 20 – Antique Nickel

  • 22 – Black

  • 24 – Dark Bronze

  • 25 – Bright Chrome

  • 26 – Satin Chrome

Applications

Perfect for:

  • High-end residential homes

  • Apartments

  • Condominiums

  • Retail storefronts

  • Offices and professional suites

  • Anywhere a Grade 1 high security deadbolt is required

 

Downloads:

Manufacturer Resources

Product Specs

Category:
Mechanical Locks
Product Group:
Mechanical Locks
Series:
Maxum Series
Subcategory:
Deadbolts
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Keyways:
DL Keyway
Commercial/Residential:
Residential
Keyed:
Yes
Grade:
Grade 1
Duty Level:
Heavy Duty
Keyed Function:
Single Cylinder
Lock Function:
Deadbolt
Tags:
medeco deadbolt, medeco maxum, medeco lock cylinder, high security deadbolt, heavy duty deadbolt
Product Model:
11R50
Product Function:
Cylinder x Thumbturn

Medeco 11R503T-05-DLT – Frequently Asked Questions

1) What door thickness does the Medeco Maxum residential deadbolt accommodate?
Standard residential door thickness of 1-3/8" to 1-3/4". Verify your door thickness before installation. Consult manufacturer specifications for non-standard applications.
2) Does this deadbolt work with existing door prep?
Uses standard 2-1/8" door hole and 1" cross bore. Compatible with most existing residential deadbolt prep. Check backset measurement - typically 2-3/8" or 2-3/4".
3) How do I determine the correct handing for installation?
Single cylinder deadbolts are reversible during installation. The thumb turn goes on the interior side. Latch bolt can be reversed to accommodate door swing direction.
4) What finish options are available for the Maxum series?
Available in multiple finishes including satin chrome, bright brass, and oil rubbed bronze. Verify specific finish availability for this model. Finishes are designed for residential weather exposure.
5) What security grade does this Medeco deadbolt provide?
Medeco Maxum series typically meets ANSI Grade 2 standards for residential applications. Features hardened steel bolt and anti-drill cylinder protection. Check specific model documentation for grade certification.
6) Can this deadbolt be keyed to match existing Medeco locks?
Yes, can be keyed alike with other Medeco DL keyway locks. Requires professional locksmith service for key matching. Medeco's patented key control system prevents unauthorized duplication.
7) What tools are needed for installation?
Standard hand tools: screwdriver, drill with bits, chisel, and measuring tape. Follow manufacturer's template for strike plate mortising. Installation typically takes 30-45 minutes.
8) How do I adjust the latch bolt if it doesn't align properly?
Check door frame alignment first. Latch bolt can be reversed for door swing direction. Strike plate may need repositioning. Ensure door is properly hung and not sagging.
9) Are replacement parts available for the Maxum series?
Yes, Medeco provides replacement cylinders, thumb turns, and hardware components. Contact authorized Medeco dealers for genuine parts. Maintain warranty coverage with original components.
10) What other Medeco residential models are similar to the Maxum?
Consider Medeco Maxum Residential double cylinder or entrance sets for complete door hardware. Deadbolts from the same series offer consistent keying and finish matching.
11) Will this deadbolt work in extreme weather conditions?
Designed for residential exterior use. Cylinder and finish resist corrosion from weather exposure. In harsh climates, regular lubrication of moving parts extends service life.
12) What are the key dimensions I need to verify before ordering?
Measure door thickness, backset distance, and existing hole diameters. StandardSpec: 2-1/8" bore, 1" cross bore, 2-3/8" or 2-3/4" backset. Verify door weight capacity for proper operation.
How fast can I get the Medeco 11R503T-05-DLT 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 11R503T-05-DLT come with a warranty?
Absolutely. The Medeco 11R503T-05-DLT 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 11R503T-05-DLT?
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 11R503T-05-DLT 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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