Commercial Door Knob Functions

When shopping for commercial door hardware there are a lot of functions available to accommodate all kinds of commercial applications. And it may be easier for you to shop this way, knowing what functions does what.

T501An Entry Lock Function: An entry function has a keyed cylinder on the outside and a push button for locking the door on the inside. The inside button will lock the lever on the outside until you unlock it by rotating the inside lever or by using the key on the outside.

 

T511

Entry/Office Lock: This style will have a keyed cylinder on the outside and a turn/push button to lock the inside. The turning button will lock the outside lever which will require the outside lever to be unlocked with the key until the button is manually unlocked by the inside. If its a push button, it will lock the outside lever until you rotate the lever from the inside or you unlock by the key from the outside. The inside lever is always free.

 

T511Office Lock: The office lock will have a keyed cylinder on the outside and a turn button on the inside. Turning the button will lock the outside lever requiring you to use the key to unlock until the button is manually turned or unlocked from the inside. The inside lever is always free.

 

T561Classroom Lock: The classroom lock will have a keyed cylinder on the outside and can be locked and unlocked by the key and the inside lever is always free.

 

T381Exit Security Lock: This lock will retract the latch by either lever except if the key from the inside lever has locked the outside lever. And when the outside lever is locked you can use the key on the outside lever or turn the inside lever to retract the latch.

 

T411Asylum Lock: The Asylum function includes a deadlocking latch bolt and can be operated by the key on either side. Both of the levers will always be inoperable so it will always require a key to open the latch.

 

T571Dormitory Lock: This style also includes a deadlocking latch bolt and can be operated by the levers except when locked by the push button on the inside lever. The key on outside lever will lock or unlock the outside lever and automatically releases the button. Closing the door also releases the push button. The inside lever is always free.

 

T851Storeroom Lock: This style of lock includes a deadlocking latch bolt that is operated by the lever inside or by the key on the outside. Outside lever is always inoperable and inside lever is always free.

 

T851Storeroom (Electrified – Fail Safe): This lock will open the latch bolt by the lever from either side except when the lever is electrically locked. When the outer lever, that is inoperable, is locked the latch bolt retracts by the keyed cylinder from the outside.

 

corridorAssisted Living or Corridor Lock: You can lock or unlock this by the key from outside. The push button locks the lever from the inside. Closing the door or turning inside lever will release the button and unlock the door. When the outside lever is locked by the key it can only be unlocked by the key. The inside lever is always unlocked.

 

T101Passage/Closet Function: No locking mechanism on this function. The function is always unlocked.

 

T301Privacy Hospital Lock: Outside lever is locked by the push button on the inside lever. Rotating the inside lever, closing the door or turning the emergency release turn button on the outside will release the push button. Inside lever is always free.

 

T12

Dummy Trim: This is a single trim that is surface mounted to the door.

 

y161Communicating Passage Lock: The door is opened by the inside lever and the outside is a non removable blank plate.

 

exitExit Non Keyed: This function has a blank plate on the outside and the inside lever is always unlocked.

 

Function_patioPatio Lock: This function is operated by either side unless the outside is locked by the push button from the inside. Unlocks by turning inside lever or closing door.

 

facultyFaculty Restroom Lock: This function has an outside lever that is fixed. Enter by the key only. Push button on the inside lever activates a visual occupancy indicator. An emergency mater key will be able to unlock from the outside if emergency. When turning the inside lever or closing the door will release the visual occupancy indicator. And rotating the inside spanner button provides lock out feature by keeping indicator activated.

Hotel and Motel Commercial Lock: The deadbolt is retracted by the key in the upper lock from the outside or by the inside turn unit. The bolt automatically deadlocks when fully thrown. Deadlatch retracted by the key in outer fixed knob. Push button in inner knob/lever activates visual occupancy indicator. Rotation of inside spanner button provides lockout feature by keeping indicator thrown. Turning inside knob/lever retracts deadbolt and latch simultaneously for immediate exit.

communicatingCommunicating Lock: This is locked or unlocked by the key from the outside and there is a blank plate inside.

 

 

Commercial Grade 1 Hardware

Falcon D100 Series Grade 1 Deadbolt

Falcon T Series Grade 1 Quantum Lever

 

If you are looking for some grade 1 stuff, try the Falcon Commercial Hardware. They have a Grade 1 (which is the best grade) and they are way less expensive than some of the other brands.

Click here to find the Grade 1 stuff.

 

 

EZSet Commercial Door Lever – Install

Installing a commercial door lever is a little intimidating at first, but it’s really quite simple once you understand how the lock assembly works in the door. They are even more challenging to install in doors that are prepped for residential locks. Commercial doors are generally prepped a little differently as the heavy duty locks used in commercial construction are a bit bulkier.

I recently installed some ezset commercial levers and took some pictures along the way to help illustrate how they are installed. Commercial Locks like these are cylindrical locks which means that they have a cylindrical housing that fits into the bore hole. The latch then attaches to that cylinder. Cylinderical locks are a more stout than your regular tubular latch type lock, so they hold up better in commercial applications.

This type of commercial lock is designed to fit a 2 1/8″ bore hole, but two additional holes are required – one above the bore hole, one below. Other Commercial locks from Schlage, Falcon or other brands will also require this same type of preparation. To prep the bore for the new lock, you’ll need to drill these holes. You can either measure, or use the template included in the package. You can see the supplied template has both standard backsets marked out. Just line up the edge, and center the circle over the bore hole. Pretty easy to do if you have some light shining behind the door. Now drill your holes.┬áSince I installed these locks on steel residential doors, I first made a small hole in the surface to start the drill bit and keep it accurate. If you don’t, you’ll likely get some floating on your bit and the hole won’t be in the right spot.

Ezset Door Prep

Punching a starter hole for the drill bit.

You can see in this photo below, the latch is installed in the cross bore. Those little tabs will align into the housing when you install the door lever, we’ll show you how to install that in the next couple of steps. First you need to drill your holes and now that you’ve made a starter hole, it will be a bit easier. Make sure you’re using a good drill bit designed to drill through steel as other types of bits may pull too hard and damage the surrounding surface of the hole you are drilling. If you are installing in wood doors, you may still want a starter hole just to help you keep it straight and on target.

Drilling Commercial Lock Installation Holes

Drilling top and bottom holes for commercial lock installation.

Before you start installing the lever set, you’ll want to verify your door thickness. Out of the box these commercial levers will fit 1 3/4″ thick doors which is pretty standard for exterior doors. If you are installing on a thinner interior door, you may need to adjust the cylindrical housing of the lock so that it will fit. To do this, you’ll need to remove the outside lever with the little tool provided, pull the rosette and then twist the housing. Its hard to see in this picture but the spindle between the cylindrical housing and the rosette is threaded. As you twist the housing on the threaded core, you can fit it to your door thickness. Once your done adjusting, put the rosette back in place and slide the lever back on until the spring loaded pin pops into place. By the way, you cannot remove this outer lever unless you have a key in the cylinder, this protects you from someone removing your outside lever to get in your door. It’s not possible to take apart unless you have the right key.

Adjusting a Cylindrical Lock

Removing the lever to adjust the cylindrical lock.

Now, insert the latch into the cross bore on the edge of the door and slide the outside half of the lever set into the bore hole. You’ll want to hold the latch in place and make sure it slides into the square notch on the edge of the cylindrical housing shown in the picture below. You can install the latch with screws on the mounting plate before hand if you wish.

Installing the commercial lever

Sliding the cylinderical housing into the bore hole.

Now that you have the latch and outside housing in place you’ll need to attach the inside mounting plate. There is a little arrow on the edge of the plate. That arrow needs to be pointed to the edge of the door where the latch is. You’ll use the screws provided to attach the plate to the other side of the lever using the inner holes on the mounting plate as shown below. You can see there is a hole right above the bolt we are installing below, you’ll use that hole in the next step, so be sure and put that first bolt in the correct hole.

Installing the inside mounting plate for an ezset door lever.

Installation of the inside mounting plate.

Now you’ll mount the outer mounting ring. Again, be sure that the little arrow along the edge of the circular mounting plate is on the side, pointing to the edge of the door. Use either the short black screws, or longer screws provided for added security if you wish.

Installing the outer mounting plate on an EzSet commercial Lock

Installing the outer mounting plate on an EzSet commercial Lock

Now you can Install the rosette. Just slide it over the outer mounting ring in the slots top and bottom and twist.

Installing the rosette on an EZSet Commercial Lock

Installing the Rosette

Then slide on your interior lever until the spring loaded tab locks it in place. If you ever need to remove the lock, you can use the tool provided (shown in previous picture) to depress the tab and slide the lever back off. You can also use a paper clip or something similar. As I mentioned before, to remove the outside lever you have to have a key for security reasons, the inside lever you do not.

Installing the inside lever

Installing the inside lever.

That’s it for the lock. Now all you have to install is the strike. These levers come standard with a heavy duty T Strike, installation of strikes is pretty simple so we won’t get into it here. I hope this article gives you a bit more confidence installing a commercial lock if you have not done so before.