Codelocks CL550 & CL555 Mortis...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$549.99
Codelocks CL550 & CL555 Mortise Lock Back-to-Back, Stainless Steel Finish

Codelocks CL550 & CL555 Mortise Lock Back-to-Back, Stainless Steel Finish

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Model: CL550 SS
$549.99
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$549.99
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CL550 & CL555 Mortise Lock Back-to-Back

Heavy duty, mechanical ANSI mortise lock.

A heavy duty ANSI mortise lock. The outside lever handle will retract the latch after a correct code is entered. The spring loaded latchbolt will lock automatically when the door is closed. The key retracts the latchbolt for entry without using a code. The key controls the deadbolt position. When the deadbolt is projected it denies access by code. When the deadbolt is projected the safety feature allows the inside lever handle to retract the deadbolt and the latchbolt, preventing people being accidentally locked in.

The key can be used to open doors for management functions such as security and cleaning.

Key Features

  • Internal doors and external doors
  • Code In/Code Out
  • Mechanical Codelock
  • Heavy duty mortise lock with double cylinder, 3 keys and anti-panic safety feature
  • Lever handle lock for doors hung on the left or right
  • Available in stainless steel
  • Use in offices / schools / warehouses

Technical Specs

  • Brand - Codelocks
  • Buttons - 2 x 6
  • Code Change Method - Tumblers (Off Door)
  • Codes - Single code storage - 2,047 non sequential code combinations available
  • Door Thickness - 1 3⁄8" - 2 3⁄8" (35mm - 60mm)
  • Finish - Stainless Steel
  • Handed - Non Handed - Locks will fit doors hung on the left or right
  • Keypad - 12 stainless steel buttons
  • Latch Type - Mortise Lock
  • Lock Dimensions - 7" (177mm) x 1 7⁄8" (48mm)
  • Lock Material - Zinc Alloy
  • Orientation - Vertical
  • Spindle - Two part 5⁄16" (8mm) spring loaded spindle
  • Suitable For - Internal, External
  • User Types - Code

Documentation & Downloads

Manufacturer Resources

Product Specs

Product Group:
Mechanical Locks
Series:
CL500 Series
Product Subgroup:
Mortise Locks and Trim
Product Type:
Deadbolts
Subcategory:
Mechanical Locks
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Deadbolt
Duty Level:
Heavy Duty
Product Model:
CL550 and CL555
Product Function:
Deadbolt
Product Finish:
Stainless Steel
Latch Type Specification:
Mortise Lock
Product Category:
Mechanical Locks
Product Substrate:
Zinc Alloy
Department:
Door Hardware

Codelocks CL550 SS – Frequently Asked Questions

1) Do I need to order the Codelocks CL550 handed for a left or right hung door?
No handing to specify. The CL550 and CL555 are non handed, and the same lock fits doors hung left or right. That makes it simple to stock one part number across a building with mixed swings.
2) What is the difference between the back-to-back and single keypad versions of the Codelocks CL500 mortise lock?
The back-to-back option puts a coded keypad on both faces of the door, so a code is required to get in and to get out. Choose No on that option and you get a keypad outside only, with the inside lever free to exit. Back-to-back is what you pick for a room you want controlled in both directions, such as a stockroom or a secure corridor between two occupied spaces.
3) Can someone get locked inside a room with the Codelocks CL555 mortise lock when the deadbolt is thrown?
No. The lock has an anti-panic safety feature: with the deadbolt projected, one turn of the inside lever pulls back both the deadbolt and the latchbolt together. The deadbolt does deny entry by code from the outside while it is projected, but egress from inside is always a single motion on the lever.
4) How do staff get in if the code is lost on a Codelocks CL550 keypad lock?
It ships with a double cylinder and three keys. The key retracts the latchbolt for entry without a code, and the key is also what controls the deadbolt position. Property managers and MRO teams use that key override for cleaning, security rounds, and any time a code is forgotten.
5) What can I use instead of the Codelocks CL550 if the opening needs a key-only deadbolt with no keypad?
The CL550 and CL555 are mechanical keypad mortise locks with code entry, so if the door only needs key control, a straight keyed deadbolt is the simpler route. The Dormakaba D900 is a small case mortise deadbolt in a cylinder x thumbturn function, keeping the mortise pocket prep while dropping the code side. For cylindrical prep instead of mortise, the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock in cylinder x blank for doors 1-3/4 inch to 2-1/4 inch, and the Dexter DB1000 single cylinder is a Grade 1 deadbolt covering 1-3/8 inch to 1-7/8 inch doors.
6) Is there a keyless alternative to the Codelocks CL550 for an office door, and how do they differ?
The CL550 and CL555 are mechanical code locks: the outside lever retracts the latch after a correct code is entered on the 12-button stainless keypad, with 2,047 code combinations and single code storage, and a key overrides for management access. If you want keyless without a mechanical code, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, and the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override. The Codelocks runs without batteries or credentials; the electronic units use power and issued credentials instead of a memorized code.
7) What does the Code Free (passage function) option do on the Codelocks CL550?
Code free lets you hold the lock in passage, so the lever retracts the latch without entering a code. Useful for offices or classrooms that stay open through the day and get locked back down after hours. The non code free build always requires the code. Both options are offered with or without the back-to-back keypad.
8) How many code combinations does the Codelocks CL500 mechanical lock support, and how do you change the code?
Single code storage with 2,047 non sequential combinations available from the 12 button stainless keypad (2 rows of 6). Code changes are made by tumblers, off the door, so the lock has to come off to be recoded. Plan on that if you rotate codes frequently across a portfolio, it is not a keypad-entry reprogram like an electronic lock.
9) Is the Codelocks CL550 tough enough for a warehouse or school door?
It is built as a heavy duty commercial mortise lock, zinc alloy case with a stainless steel finish and stainless keypad buttons, and Codelocks lists offices, schools and warehouses as the intended use. It is rated for internal and external doors, so exterior entries are in scope too.
10) Should I use a keypad mortise lock like the Codelocks CL550 or a standard keyed deadbolt?
Pick the CL500 mortise lock when you want people to get in without carrying a key and you still want a deadbolt you control separately. It combines a latch that self-locks when the door closes with a key-controlled deadbolt in one case. If nobody needs codeless entry and you just want a bolt on an existing door, a surface-prep deadbolt like the Corbin Russwin DL3011 Grade 1 cylindrical deadlock or the Arrow DBX61 Grade 2 single cylinder deadbolt is a far simpler install, since neither needs a mortise pocket.
11) What is the electronic alternative if I don't want a mechanical code lock?
The CL550 and CL555 are purely mechanical, no batteries and no wiring, which is why they suit remote or unpowered openings. If you want audit trails, credentials or remote management instead, ZenSupply carries the Dormakaba Saffire LX-D RFID electronic deadbolt with BLE and electronic lock override, the Dormakaba Nova-D RFID multihousing smart deadbolt, and the Delaney KP400 Grade 2 electronic deadbolt with programmable remote. Those need power; the Codelocks does not.
12) Will the Codelocks CL550 work on a fire rated door?
Treat that as a separate check, not an assumption. Among the comparable deadbolts ZenSupply carries, the Hager 3115, 3118, 3214 and 3215 are the ones carrying a fire rating on record, and the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch. If the opening is a rated assembly, those are the direct places to look.
13) I need a deadbolt for a 1-3/4 inch commercial door and the Codelocks CL550 is more lock than I need. What else works?
The CL550 and CL555 cover doors from 1-3/8 inch to 2-3/8 inch and combine a latchbolt, deadbolt, levers and a keypad in one mortise case. For a plain deadbolt on a 1-3/4 inch door, the Hager 3215 is a Grade 2 single cylinder deadbolt with a 1 inch throw that fits 1-3/8 inch to 1-3/4 inch and carries a fire rating, and the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch. Both are cylinder by thumbturn, so egress is by thumbturn rather than by the inside lever.
14) For a classroom door, should I choose the Codelocks CL550 or a classroom function deadbolt?
The CL550 and CL555 let staff enter by code and give management key control of the deadbolt, with the inside lever retracting both deadbolt and latchbolt so no one is locked in. A classroom deadbolt handles it differently: the Falcon D111 is a Grade 1 heavy duty classroom deadbolt with adjustable backset, the Falcon D211 is the Grade 2 medium duty classroom version, and the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder for 1-3/8 inch to 1-3/4 inch doors. Those are keyed-only and require the key at the door; the Codelocks removes the key from routine entry.
15) What is the closest equivalent to the Codelocks CL550 if I need a double cylinder heavy duty deadbolt in stainless?
The CL550 and CL555 ship with a double cylinder and a stainless steel finish, rated heavy duty. Comparable keyed double cylinder options include the Design Hardware D1 Series, an extra heavy duty Grade 1 double cylinder deadbolt for 1-3/4 inch doors, the Delaney LU Series Grade 2 double cylinder in a stainless steel US32D finish, and the Dexter DB1000 double cylinder, Grade 1 for 1-3/8 inch to 1-7/8 inch doors. None carry a keypad, so both sides operate by key.
16) If I only need a bolt thrown from the inside, is the Codelocks CL550 the wrong choice?
Likely yes. The CL550 and CL555 are built for controlled entry from outside by code with key override. For inside-only security, the Arrow E60 is a Grade 2 exit deadlock, non-keyed, in a blank plate by thumbturn function for 1-3/8 inch to 1-3/4 inch doors, and the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt. Both leave the outside face without a credential of any kind.
17) Our facility standardizes on small format interchangeable core. How does that affect choosing the Codelocks CL550?
The CL550 and CL555 come with a double cylinder and three keys as supplied. If the site keys everything to an existing SFIC system, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock with SFIC prep less core for 1-3/8 inch to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 single deadbolt with interchangeable core and a 2-3/4 inch backset, and the Delaney LM Series is a Grade 1 single cylinder less core deadbolt in dull chrome US26D. Those accept your own cores; the Codelocks pairs code entry with its supplied cylinders.
18) What finishes does the Codelocks CL550 mortise lock come in?
Stainless steel only, across all four build combinations of back-to-back and code free. If you are matching an opening to a US26D or US32D stainless scheme elsewhere in the building, the finish lines up with common commercial stainless trim.
How fast can I get the Codelocks CL550 SS 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 Codelocks CL550 SS come with a warranty?
Absolutely. The Codelocks CL550 SS 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 Codelocks CL550 SS?
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 Codelocks CL550 SS 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.
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