Simplex
Simplex 1021B-26D Satin Chrome Mechanical Knob Pushbutton Combination Door Lock
Mechanical push-button combination knob lock with adjustable backset, satin chrome finish, and SFIC core compatibility for wood or metal doors
- FinishSatin Chrome
- Selling UnitBox
- Backset2-3/4" - 2-3/8"
- KeyingKeyed Different
- Mechanical pushbutton eliminates battery replacement costs
- Single access code programmed at the keypad without removal
- Adjustable backset 60 mm to 70 mm fits standard doors
- Heavy-duty cylindrical housing with 3-hour UL/ULC fire rating
- SFIC Best-compatible core ready for 6 or 7 pin lengths
Mechanical Combination Door Lock
The Simplex 1021B-26D is a heavy-duty mechanical knob pushbutton lock for commercial and residential doors. It provides keyless exterior access via a single programmable code while allowing free egress from the inside. The lock accepts SFIC Best and equivalent 6 or 7 pin cores, sold separately, and fits wood or metal doors between 35 and 57 mm thick with an adjustable backset of 60 or 70 mm.
No Batteries Required Operation
This fully mechanical design eliminates the material cost and labour associated with battery replacements. A single access code is programmed directly at the keypad without removing the lock from the door. The cylindrical latch carries a 3-hour UL/ULC fire rating for A-label doors, and the fixed knobs are ADA compliant for accessible operation.
Upgrade From Keyed Entry Systems
This lock replaces traditional keyed cylinders where key control, rekeying costs, or card management are impractical. The jump is worth it when you need to remove the hassle of issuing and collecting physical credentials while maintaining a fire-rated, heavy-duty cylindrical housing with a 13 mm latch length.
Highlights
- Mechanical pushbutton eliminates battery replacement costs
- Single access code programmed at the keypad without removal
- Adjustable backset 60 mm to 70 mm fits standard doors
- Heavy-duty cylindrical housing with 3-hour UL/ULC fire rating
- SFIC Best-compatible core ready for 6 or 7 pin lengths
Specifications
| Brand | Simplex |
|---|---|
| Model | 1021B-26D |
| Finish | Satin Chrome |
| Selling Unit | Box |
| Backset | 2-3/4" - 2-3/8" |
| Keying | Keyed Different |
Questions about this item
How do I install the Simplex 1021B-26D on a door with a 2-3/4" backset, and what step is often missed?
Adjust the latch to the 70 mm backset, fit the unified trim plate and fixed ADA knobs, then secure the SFIC core — the step often missed is inserting the core before testing the combination.
What maintenance will the mechanical pushbutton lock need over time?
No batteries to replace; periodically lubricate the 13 mm cylindrical latch and verify the single access code still operates the SFIC core smoothly.
What is the first limit reached under sustained heavy use of this lock?
The 3-hour UL/ULC fire rating on A-label doors is the primary sustained-use limit; mechanical wear on the cast front housing and knobs may appear after very high cycle counts.
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