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    • Sargent

    Authorized Sargent Distributor | In Stock & Ready to Ship

    Expert Field Guide: Why Sargent is the Institutional Gold Standard

    If you've spent any time in the maintenance department of a major hospital or a university campus, you've seen the Sargent star. While Schlage is excellent for general commercial use, Sargent is often the brand chosen when the hardware is going to be beaten to death by heavy traffic and abuse. The problem most installers face is the "lever snap"—that moment a Grade 1 lock fails because a cart hit it or someone decided to hang their body weight on the handle. Sargent solved this with their 11-Line (T-Zone) construction. Unlike the Schlage ND-Series, which uses a traditional torque spring, the Sargent T-Zone uses a patented through-bolt design that distributes that stress across the entire door. It's the difference between a lock that lasts ten years and one that lasts the life of the building.

    What makes Sargent different from competitors like Corbin Russwin or Yale is their "multi-functional" approach. Their 8200 Series mortise lock body is a work of art—literally. You can stock a handful of universal 8200 bodies and change the function in the field with a few simple parts. It's a lifesaver when the architect changes a door from an "Office" function to a "Storeroom" function at the last minute. Where some Adams Rite storefront hardware can feel flimsy, or where generic Grade 1 levers start to sag after a million cycles, Sargent stays crisp. We've pulled Sargent mortise locks out of buildings that were being demolished after 40 years, and the internal springs were still as snappy as the day they were installed.

    For the apprentice on the job, here is the cheat sheet: the 10-Line is your standard heavy-duty workhorse, the 11-Line (T-Zone) is for the doors that get kicked open, and the 80-Series is the quietest, most reliable exit device on the market. If you're retrofitting a facility that's already on a Schlage key system, don't sweat it—we can provide most Sargent hardware prepped for Schlage C or Large Format IC cores, so you don't have to carry two sets of keys. Lock Depot sells brand new Sargent products with the full manufacturer warranty.

    Sargent Commercial Series Comparison

    Series Application ANSI Grade Key Differentiator Price
    11-Line (T-Zone) High-Abuse / High-Traffic Grade 1 Superior torque resistance; 10M+ cycles $$$
    10-Line Heavy-Duty Commercial Grade 1 Standard institutional workhorse $$
    8200 Series Institutional Mortise Grade 1 Multi-function lock body; 14M+ cycles $$$
    80-Series Life Safety Exit Device Grade 1 Rugged rail design; quiet operation $$$
    7-Line Standard Commercial Grade 2 Ideal for interior office use $

    Pro-Tip: The "Bored vs. Mortise" Reality Check

    When you're doing a retrofit, never assume the existing holes will work for a Sargent upgrade. A Sargent 10-Line cylindrical lock uses a standard bored-hole prep, but if the customer wants to move up to the 8200 Series mortise, you're looking at a completely different door prep. I've seen guys try to "free-hand" a mortise pocket into a wood door with a chisel because they didn't have a jig—don't be that guy. If you're switching chassis types, buy the proper mortise jig or order a new prepped door. It'll save you four hours of labor and a very angry phone call from the client when the trim doesn't cover the gap.

    Frequently Asked Questions

    Are Sargent 11-Line (T-Zone) levers reversible?

    Yes. One of the best features of the 11-Line is that the levers are non-handed. You can swap them from a Left Hand to a Right Hand door in seconds without having to take the lock chassis apart or order specific handing.

    Can I use my Schlage keys in a Sargent lock?

    Absolutely. While Sargent has their own high-security keyways like Degree and Signature, we can order most Sargent locks with a "Schlage C" cylinder prep or a cylinder prepped for Schlage Large Format Interchangeable Cores (LFIC) to match your existing system.

    What is the benefit of the "T-Zone" construction?

    The T-Zone design interlocks the lockset with the door itself more securely than a standard cylindrical lock. This makes it almost impossible to "torque" the lever off the door with a pipe wrench or by jumping on the handle—common methods used in break-ins.

    Do Sargent exit devices come with the strikes included?

    Yes, all Sargent 80-Series exit devices ship with the standard strikes required for their specific mounting (Rim, Surface Vertical Rod, etc.). However, if you are mounting to a narrow-stile aluminum door, you may need to order a specific strike separately.

    What is the difference between a 10-Line and an 11-Line lock?

    Think of the 10-Line as the standard Grade 1 lock. The 11-Line is the "Extreme Duty" version. The 11-Line is tested to over 10 million cycles (nearly ten times the Grade 1 requirement) and is specifically designed for doors that see physical abuse.

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