• 8891FL Yale Electrified Mortise Lockbody

*Actual product and finish may vary

8891FL Yale Electrified Mortise Lockbody Fail Secure Electrified Mortise deadlocking latchbolt.

Lockbody only.

24VAC/DC, Specify Handing (24VDC-.39A)

-Deadlocking latchbolt.

-Latchbolt by lever either side ONLY WHEN SOLENOID IS ENERGIZED.

-Latchbolt retracts by key outside and knob inside when solenoid IS NOT energized.

-Inside lever always active.

-Fail secure.  Power off, lever remains locked.

The Yale 8800 series mortise lock is an industry standard product. Suitable for installation on doors 1-3/4" to 3-1/4" thick with standard trims, these products have a 1" throw stainless steel deadbolt. The latchbolt is 3/4" throw with stainless steel two-piece antifriction camming action.

For use on stair tower doors, office doors, classrooms, interlocks, elevator lobby doors, laboratories, computer rooms, cashier stations, hospital equipment rooms and pharmaceutical storage rooms. For narrow frame profiles, consult factory.

Yale 8891 mortise lock information

Features – 8800 Series Electrified Locks


• Power off – outside lever locked

• Power on – outside lever active

• Auxiliary latch deadlocks latchbolt

• Inside lever always free

• Mechanical key override by outside when locked

Trim Designs

8800 electrified mortise locksets are available with all knob, lever, SL and Reflections® trims.

Electrical Specifications

Fail Safe/Fail Secure

612 mA @ 12 VDC

330 mA @ 24 VDC


Certified ANSI/BHMA A156.13, Series 1000, Operational Grade 1 (8800FL with CN escutcheon & SL8800 meet Security Grade 1).

All monitoring switches rated at:

2 Amp @ 30 VDC

3 Amp @ 125 VAC

Yale® electrified 8800 locks are equipped with ElectroLynx connectors. As a standard feature, these connectors link power from the incoming source to electrified locking products, including hinges, locks, exit devices, magnetic holders and strikes.

Features - 8800 Series Locks


The 8800FL meets accessibility guidelines of the Americans with Disabilities Act and the requirements of the Uniform Federal Accessibility standards and ANSI 117.1, all requiring ease of accessibility for the handicapped.


Certified ANSI/BHMA A156.13, Series 1000, Operational Grade 1 (8800FL with CN escutcheon & SL8800 meet Security Grade 1).

Bevel Front

Yale 8800 series fronts are free floating to adjust from flat to the standard bevel of 1/8" in 2".

Door Thickness

8800 series mortise locks are supplied as standard for 1-3/4" thick doors. For other than standard, specify the door thickness on the order: (i.e. 2", 2-1/4", etc.)


8800 series mortise locks conform to ANSI/BHMA Specifications A156.115 which cover hardware preparations for steel doors and steel frames and A156.115-W which cover hardware preparations for wood doors with wood or steel frames.

Knurled Designs

Where required by the local authority, trim can be knurled to be identifiable to the touch for blind persons. All knob designs except CA may be ordered knurled; all lever designs except designer trim and Reflections® trim (pages 10 & 12) may be ordered knurled.

Only the outside knob or lever will be knurled or abrasive coated unless specified otherwise. To order a complete lockset knurled or abrasive coated, suffix the lockset model number with “Knurled” or “Abrasive Coated,” i.e. LF x CN8807 x “Knurled,” LF x CN8817-2 x “Knurled Inside Only,” AU x CN8828FL “Abrasive Coated.”

Lead Shielding

All Yale 8800 series mortise locks are available with a lead shield for installation in lead-lined doors. To order, suffix the lockset model number with “lead-lined.”

Quick Reversibility

Yale mortise locks with the same trim on both sides (knob x knob or lever x lever) are field reversible. These locks can be converted to accommodate the hand of the door. However, to reduce installation costs, it is recommended that the hand of the door be specified for each lockset ordered. If the hand of the door is not specified, RH will be furnished.


Yale 8800 series mechanical mortise locks carry a ten (10) year warranty and 8800 series electrified mortise locks carry a two (2) year warranty.

Underwriters Laboratories

(UL - cUL)Yale 8800 series mortise locks have been listed by Underwriters Laboratories Inc. for use on fire doors having a rating up to and including 3 hours and for use on 20 minute wood doors. This pertains to single swing doors not exceeding 4 feet in width and 8 feet in height and in doors mounted in pairs not exceeding 8 feet in either direction (unless otherwise noted in the individual listings.)

In general, single-point mortise locks or latches with 3/4" minimum latch throw are intended for the active leaf of doors mounted in pairs, with the inactive leaf provided with top and bottom flush or surface bolts of the manual, automatic, or self-latching type. The door Classification Marking specifies the minimum latch throw required for the individual door.

Yale 8800 series mortise locks with 3/4" throw latchbolts may also be used on single swing doors rated 1-1/2 hours or less, up to 4 feet in width and 9 feet in height. This is in addition to the rating mentioned above. All Yale 8800 Series Mortise Locks with Lever Handle Trim are UL listed for fire door applications. Underwriters Laboratories does not list locks with rabbeted fronts, locks with deadbolt only, or locks with hold-back feature on the latchbolt. Windstorm Certified (refer to local codes).

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8891FL Yale Electrified Mortise Lockbody

  • Brand: Yale
  • Product Code: 8891FL
  • $421.00

Available Options