Simplex
Simplex 1011-3 Brass US3 Mechanical Knob Pushbutton Combination Door Lock
Mechanical pushbutton knob lock with adjustable backset for wood or metal doors 35 to 57 mm thick
- FinishBright Brass
- Selling UnitBox
- Backset2-3/4" - 2-3/8"
- KeyingKeyed Different
- Keyless entry saves key management cost and effort
- Mechanical pushbutton code set at keypad without removal
- Adjustable backset fits 60 mm or 70 mm door prep
- Heavy-duty brass construction with 3-hour fire-rated latch
- ADA-compliant lever allows free egress from interior
Mechanical Combination Door Lock
The Simplex 1011-3 is a heavy-duty knob lock that grants exterior access through a pushbutton combination while allowing free egress from the inside. Its fully mechanical design removes the need for batteries, wiring or scheduled power-source maintenance. A single access code is programmed at the keypad without removing the lock from the door. The bright brass US3 finish suits commercial and residential entries where key management is impractical.
Adjustable Backset and Door Range
The lock fits wood or metal doors between 35 and 57 millimetres thick and covers an adjustable backset of 60 to 70 millimetres. The latch measures 13 by 19 millimetres. This range covers standard interior and exterior door preparations, but it will not suit thinner cabinet doors or thicker security doors outside the stated limits.
Three-Hour Fire-Rated Cylindrical Latch
The cylindrical latch carries a three-hour UL/ULC fire rating on "A" label doors. This rating is the single specification that determines suitability for fire-rated openings in corridors, stairwells or tenant separations. Buyers whose doors lack a matching fire label or who require a mortise latch instead of a cylindrical one cannot use this lock.
Highlights
- Keyless entry saves key management cost and effort
- Mechanical pushbutton code set at keypad without removal
- Adjustable backset fits 60 mm or 70 mm door prep
- Heavy-duty brass construction with 3-hour fire-rated latch
- ADA-compliant lever allows free egress from interior
Specifications
| Brand | Simplex |
|---|---|
| Model | 1011-3 |
| Finish | Bright Brass |
| Selling Unit | Box |
| Backset | 2-3/4" - 2-3/8" |
| Keying | Keyed Different |
Questions about this item
Will the 2-3/4 inch backset align with the existing holes in my older door?
The adjustable backset covers both 2-3/4 inch (70mm) and 2-3/8 inch (60mm) standards, so it matches most legacy door preparations.
How can I verify the latch is engaging correctly after installation?
Close the door and confirm the 1/2 inch by 3/4 inch latch bolt extends fully into the strike plate without binding, then test the pushbutton code for smooth retraction.
Does the box include a mortise cylinder or do I need to order one separately?
The 1011-3 is supplied without a cylinder; a compatible mortise cylinder must be purchased separately to complete the locking function.
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