Medeco Maxum Residential Singl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$263.00
$169.32

Medeco Maxum Residential Single Cylinder Deadbolt, DL Keyway

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Model: 11R503T-05-DLN
$263.00
$169.32
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$263.00
$169.32
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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
Model:
11R50
Subcategory:
Deadbolts
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Keyways:
DL Keyway
Function:
Cylinder x Thumbturn
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

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