Emtek 3300 Mortise Lock Box On...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$361.00
$288.80

Emtek 3300 Mortise Lock Box Only, Thumb by Lever or Knob, Includes Face Plate, Trim Plate and Strike Plate. Cylinder Not Included

(5 reviews) Write a Review

Model: F20.3300.75.RH.US15
From the Parts Collection
$361.00
$288.80
Selected Specify F20 or F13 Function is
Selected Backset is
Selected Handing is
Selected Finish is

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

$361.00
$288.80
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks

Emtek Mortise Lock Box Only

- Thumb by Lever or Knob
- Latch kit included: Face Plate, Strike Plate and Trimplate  
- Cylinder NOT included
-Backset 2 1/2" or 2 3/4"

 

 

Specifications:

  • Backset: 2-1/2" or 2-3/4"
  • Door Prep: Standard Mortise ANSI A115.1
  • UL Function: ANSI F20 or F13
  • Material: Brass

Product Specs

Subcategory:
Parts
Collection:
Parts
Product Type:
Mortise Lock Boxes
Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Commercial/Residential:
Residential
Lock Type:
Mortise
Series:
Parts
Theme:
American Classic
Electronic:
No
MAP Policy:
Yes
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Model:
3300
Product Style:
Parts
Product Category:
Parts and Accessories
Department:
Door Hardware

Emtek F20.3300.75.RH.US15 – Frequently Asked Questions

1) What comes with the Emtek 3300 mortise lock box, and what do I still have to buy to finish the door?
The 3300 is the mortise lock body plus its latch kit: face plate for the door edge, strike plate for the jamb, and trim plate. Body material is brass. The cylinder is not included, so the keyed side needs a mortise cylinder ordered on its own. The lock is set up thumbturn on one side and lever or knob on the other, and that trim is a separate selection too. Budget for two things beyond the box: a cylinder and the handle set.
2) What do I need to specify when ordering an Emtek 3300 mortise lock body?
Four things get pinned down on the order: backset (2-1/2 inch or 2-3/4 inch), handing (LH in-swing, LHR out-swing, RH in-swing, or RHR out-swing), function (F20 or F13), and finish. Get all four off the door before you order, because the lock body is built to that combination. Pull the old lock and measure the backset, look at which way the door swings from the outside for handing, and match the function code to what you are replacing or what the door schedule calls out.
3) Will the Emtek 3300 drop into a door that is already cut for a mortise lock?
Door prep is standard mortise, ANSI A115.1. If the door and jamb are already cut to that prep and the existing backset is 2-1/2 or 2-3/4 inches, the 3300 goes into the same pocket with no new machining. The two things that stop it are a non-standard pocket and a backset that does not match one of the two offered. New face plate and strike plate come in the kit, so the edge of the door and the jamb get fresh hardware rather than reusing worn plates.
4) How do I know whether I need the 2-1/2 inch or the 2-3/4 inch backset on an Emtek mortise lock?
Measure from the edge of the door to the center of the hole the knob or lever spindle passes through. That distance is the backset, and the 3300 is built in 2-1/2 inch and 2-3/4 inch. The two are not interchangeable in the same door: order the wrong one and the spindle hole will not line up with the pocket. On a replacement, the fastest check is to pull the existing body and measure it directly rather than working off the face of the door.
5) How do I determine the handing on an Emtek 3300, and does it work on an out-swing door?
Out-swing doors are covered. Four handings are built: LH in-swing, LHR out-swing, RH in-swing, RHR out-swing. To read yours, stand outside the door on the keyed side. Hinges on your left is left hand, hinges on your right is right hand. If the door swings away from you it is the plain LH or RH; if it swings toward you it is the reverse, LHR or RHR. Handing is a build option on this body, so it has to be right on the order rather than sorted out at the door.
6) Does the Emtek 3300 mortise lock box include a cylinder?
No cylinder ships with the 3300. You supply a mortise cylinder for the keyed side, and that is where the keying decision lives, not in the lock body. If you are keying this door alike with the rest of a building or a unit, spec the cylinder to the keyway and keying you already run and the body does not care. Same lock box, whatever cylinder you put in it.
7) My Emtek mortise lock has failed. Can I replace just the lock body without changing the whole door?
That is exactly what the 3300 is sold as, the mortise lock box on its own. Pull the failed body and record three things before ordering: backset (2-1/2 or 2-3/4 inch), handing, and whether it is the F20 or the F13 function. Order to match and it returns to the same ANSI A115.1 pocket. Face plate, strike plate, and trim plate come with it. The cylinder does not, so that is the one extra line on the order.
8) Do I have to pick F20 or F13 on the Emtek 3300, or is one the default?
Function is a required choice, not a default. The 3300 is built in two ANSI mortise functions, F20 and F13, and the code determines how the bolts and the trim behave once it is in the door. Take the code from the lock you are replacing, usually stamped on the case or the face plate, or from the function called out on your door schedule. It is the one selection a buyer is most likely to skip and the one that changes how the door actually works.
9) What does thumb by lever or knob mean on an Emtek mortise lock?
It describes how the two sides of the door are driven: a thumbturn on one side, a lever or a knob on the other. Practically, it means the body accepts either lever trim or knob trim, so the handle style is a decision you make separately and not something the box locks you into. The 3300 is the lock case and latch kit, so the visible thumbturn and the lever or knob rosette are ordered as trim.
10) Is the Emtek 3300 mortise lock body suitable for a commercial opening?
Emtek classes the 3300 as residential hardware. For a house, a condo unit, a townhome entry, or a short-term rental door it is the right class of lock body. If the opening is a commercial entry where the drawing calls for a Grade 1 mortise lock, a fire rated door, or a specific code-driven function, this is not the body to spec. On those jobs look for a commercial mortise lock built to ANSI/BHMA A156.13 Grade 1 in the exact function your schedule names.
11) What finishes does the Emtek 3300 mortise lock box come in, and do the plates match my other hardware?
Eleven finishes: Flat Black (US19), French Antique (US7), Medium Bronze (MB), Oil Rubbed Bronze (US10B), Pewter (US15A), Polished Brass Lifetime (US3), Polished Chrome (US26), Satin Brass (US4), Satin Nickel (US15), Tumbled White Bronze (TWB), and Unlacquered Brass (US3NL). The finish carries the visible pieces of the kit, the face plate along the door edge and the strike on the jamb, so pick the code that matches the hardware already on the opening. One thing to know if you are matching across doors: Unlacquered Brass is a living finish and darkens over time, so a new piece will not match an aged one out of the box.
How fast can I get the Emtek F20.3300.75.RH.US15 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 Emtek F20.3300.75.RH.US15 come with a warranty?
Absolutely. The Emtek F20.3300.75.RH.US15 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 Emtek F20.3300.75.RH.US15?
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 Emtek F20.3300.75.RH.US15 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.

Product Reviews

  • 4
    Solid Lock Box Upgrade

    Posted by Emma on Oct 20th 2023

    The Emtek 3300 Mortise Lock Box is a game-changer for security. What's the best part? It fits various door setups, providing flexibility. Just be aware, it doesn't come with the cylinder, which could add to the cost. Overall, a smart choice for boosting your home's protection!

  • 5
    Great Lock Box for Customizatio

    Posted by Tommy on Nov 6th 2023

    The Emtek 3300 Mortise Lock Box is perfect for those who like customizing their hardware. You can match it with your preferred knob or lever, which is awesome. However, be ready to purchase the cylinder separately, and the cost can add up. The flexibility it offers is fantastic, but it's essential to budget for the extras.

  • 5
    A Sturdy Lock, but Not without Quirks

    Posted by Walter on Oct 26th 2023

    The Emtek 3300 Mortise Lock Box from ZenSupply is solidly built, and I love the flexibility to use a thumbturn, lever, or knob. The drawback is that it doesn't come with the cylinder. So, that's an extra purchase and hassle. But if you're handy with locks, it's a good choice for security and style.

  • 5
    Secure and Stylish Door Hardware

    Posted by Robert on Oct 10th 2023

    The Emtek 3300 Mortise Lock Box is sleek and stylish, and the included face plate and trim plate are a nice touch. But remember, the cylinder isn't included, so you'll need to buy that separately. It's a solid choice for those who value both aesthetics and security.

  • 5
    A Solid Lock Solution!

    Posted by Oscar on Oct 4th 2023

    I got the Emtek 3300 Mortise Lock Box, and it's a sturdy choice. Easy to install and fits with my existing setup. One downside - cylinder not included, which caught me off guard. Overall, good product!