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Bright brass cylindrical lever lock with pushbutton keypad, left-hand orientation

Simplex

Simplex L1021B-LH-3 Bright Brass LH Mechanical Pushbutton Combination Door Lock

SKU CH-KFTQ-PNDN0 MPN L1021B-LH-3

Mechanical lever pushbutton lock with adjustable 60 mm or 70 mm backset, 13 mm by 19 mm latch, and SFIC core compatibility for doors 35 mm to 57 mm thick

  • FinishBright Brass
  • Selling UnitBox
  • Backset2-3/4" - 2-3/8"
  • KeyingKeyed Different
  • Keyless entry with a single programmable code
  • No battery changes needed thanks to mechanical operation
  • Fits standard door thicknesses from 35 mm to 57 mm
  • Adjustable backset of 60 mm or 70 mm for flexible installation
  • Three-hour UL fire rating on A-label doors for safety

What it is and who it's for

The Simplex L1021B-LH-3 is a bright-brass mechanical pushbutton lever lock designed for left-hand doors in commercial or institutional settings. It accepts SFIC cores from Best and compatible 6- or 7-pin formats so the facility can use its existing key system. The lock carries a three-hour UL/ULC fire rating on A-label doors.

Installation notes and common issues

The lock fits wood or metal doors 35 mm to 57 mm thick and offers an adjustable backset of 60 mm or 70 mm. The latch measures 13 mm by 19 mm. Because the SFIC core is sold separately, the cylinder must be sourced and installed before the lock becomes operational. A single access code is programmed at the keypad without removing the unit from the door.

Who this suits and who should look elsewhere

This lock suits projects that need a heavy-duty, keyless-entry lever with fire-rated hardware and SFIC compatibility. Builders who need a right-hand lever, a different finish, or a mortise-style lock body should look elsewhere. It also does not suit buyers who want electronic audit trails, multi-code scheduling, or wireless management features.

Highlights

  • Keyless entry with a single programmable code
  • No battery changes needed thanks to mechanical operation
  • Fits standard door thicknesses from 35 mm to 57 mm
  • Adjustable backset of 60 mm or 70 mm for flexible installation
  • Three-hour UL fire rating on A-label doors for safety

Specifications

BrandSimplex
ModelL1021B-LH-3
FinishBright Brass
Selling UnitBox
Backset2-3/4" - 2-3/8"
KeyingKeyed Different

Questions about this item

How do I confirm the Simplex L1021B-LH-3 is working correctly after installation?

Enter your programmed code on the pushbutton keypad and verify the lever retracts the 13 mm latch smoothly; the lock should then relock automatically when the lever is released, and the key override (using your SFIC core) must also turn freely.

What comes in the box with the Simplex L1021B-LH-3 and what must I supply?

The box contains the bright brass lock body, left-hand lever trim, adjustable 60 mm or 70 mm backset latch with 13 mm x 19 mm bolt, strike plate and mounting hardware; you must purchase a 6- or 7-pin SFIC core separately.

Which Simplex L1021 variant fits a 57 mm thick door with a 70 mm backset?

This L1021B-LH-3 model adjusts to a 70 mm backset and accommodates doors from 35 mm to 57 mm thick, so it covers that combination directly.

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