Commercial Door Locks

Is it time to purchase new Locks? Big box stores have entire aisles filled with a wide variety of security door locks. How does the consumer know what is a good value lock with adequate security features?

PROTECTION PLUS  can help!

A little knowledge can go a long way! Here’s a quick education of the basic language of the Lock Industry.

  • By learning some basic language of lock industry you can determine quality levels.
  • Lock quality is assessed by “Grade”. Grade One is the highest quality. The higher the “grade” number, the lower the quality. Typically, Grade One locks are sold by Locksmiths and security companies. Most big box stores sell Grade 3 door locks, knob sets and deadbolts. These are mass produced locks, made with low standards and cheaper internal components including plastic and nylon. They have minimal protection from abuse, heat, or common burglary tricks like lock picking, key bumping, or drilling. In many cases they also cannot be repaired or upgraded, they are sealed units, and more or less disposable. These are the typical “builder” installed locks, low cost with minimal security features.
  • The lack of key Security is another major weakness in many lower grade locks commonly sold in Big Box stores. The cheapest locks can be in essence rekeyed by inserting a blank key and tapping the cylinder, the tumblers inside will align to the new key. This allows a burglar quick entry with no sign of forced entry. High Security Grade One locks use different technology, such as side pins or ball bearings to prevent this tampering.
  • Key Control takes security to another level. The ability to control who can duplicate a key is an important step forward in security. At times we all lend out keys, perhaps to a neighbour or contractor. With a key control, only an authorized person with I.D. will be able to duplicate the key, and only from an authorized dealer, not the corner store. Key control can stop at simply limiting duplication or it can be expanded to creating a master key system allowing you to have a Master Key that can open all locks while limiting access to others door by door, lock by lock. This is a great solution for homes where perhaps a cleaning service gets access to a side door but not the home office. And businesses where a manager has a Master key with full access, but employees are limited to specific doors and locks.
  • Check your local fire code for restrictions. We get plenty of requests for deadbolts that are keyed both sides. In many jurisdictions this is not permitted. In the event of a fire, do you want to make it difficult to exit? This is an example of what is not permitted in some jurisdictions, our Locksmith and consultants can assist you to insure you adhere to local bylaws and safety regulations.

Door Locks and Cylinders: Mul-T-Lock’s door lock family also includes Mortise Locks, Knob & Lever Cylindrical Locks, and Jimmy-Proof Locks, all of which include Mul-T-Lock’s patented cylinder and are designed to offer a complete high security package.

Deadbolts: Mul-T-Lock’s line of high security door locks has been spearheaded by the unique Hercular® Deadbolt. Utilizing superior strength and ease of installation, the Hercular® Deadbolt has set new standards in high security locking. Constructed of solid brass and hardened steel, the Hercular® deadbolt lock is recognized by many as the best deadbolt on the market today.

The Cronus provides a lower cost alternative, with a good quality Grade 2 lock, also compatible with Mul-T-lock’s key control features. Mix and match the Cronus and Hercular as needed and still use the same key to open them. Ask our consultant about the best fit for your application and budget.

Door Locks and Cylinders: Mul-T-Lock’s door lock family also includes Mortise Locks, Knob & Lever Cylindrical Locks, and Jimmy-Proof Locks, all of which include Mul-T-Lock’s patented cylinder and are designed to offer a complete high security package.

Deadbolts: Mul-T-Lock’s line of high security door locks has been spearheaded by the unique Hercular® Deadbolt. Utilizing superior strength and ease of installation, the Hercular® Deadbolt lock has set new standards in high security locking. Constructed of solid brass and hardened steel, the Hercular® deadbolt lock is recognized by many as the best deadbolt on the market today.

The Cronus provides a lower cost alternative, with a good quality Grade 2 lock, also compatible with Mul-T-lock’s key control features. Mix and match the Cronus and Hercular as needed and still use the same key to open them. Ask our consultant about the best fit for your application and budget.


Cylinders: Already have good quality door locks or padlocks? Have you just moved into a new building with good quality locks but you need to insure there are no unauthorized keys out there? Ask us about increasing your security by installing new High Security Mul-T-Lock Cylinders that are drill, bump and pick resistant, and offer key control. Mortise, Rim, and Key in Knob Cylinders headline Mul-T-Lock’s comprehensive line of retrofit solutions. Available for a wide range of Residential, Commercial, Industrial, and International locksets, each is designed to offer an affordable upgrade to pick, drill and bump resistance, as well as patented, restricted key control to almost any existing lockset. In addition, Mul-T-Lock carries Large Format Interchangeable Cores, Mogul Cylinders, and a variety of Profile Cylinders to fit multiple applications.

Passage sets: Looking for more secure solutions for interior door locks in your home or office? Do you need to switch to Lever sets to meet upcoming Accessibility regulations? Looking to expand your key control to interior doors? We can help!

Padlocks An often overlooked security weakness is the use of Padlocks. Padlocks often protect and control access to valuable items ranging from Bar fridges, to equipment rooms and tool sheds. Yet often are purchased with little thought to security from the local department store. Mul-T-Lock’s various padlock lines are world renown, and recognized by many institutions. Whether it’s the weather resistance of the G-Series Line, the familiarity of our T-Series Line, the versatility of the C-Series Line, or the brute strength of our robust E-Series Line, Mul-T-Lock carries the best solution for almost any padlock application.

Contact a PROTECTION PLUS Security Expert for more information.