We suspect that the underlying shape of FSB 1015 was originated in the 1930s by a company called Wehag. The version by Johannes Potente is a very clean-lined affair that is particularly sought after in the Netherlands.

The 12-1015 lever handle is available as passage, privacy, dummy and key lock configurations, in various finishes for hinge, swing, bi-folds, pivot doors etc.

This lever handle can be ‘mixed and matched’ with various roses and back plates to match both the style of the project and to fit on various joinery styles. All handles can be used on passage (non-locking), privacy, or locking doors. Escutcheons, roses, latches, locks etc are sold separately.

Details
  • Category
    Lever Handles
  • Range
    Levers + Knobs
  • Brand
    FSB
  • Designer
    FSB
  • Warranty
    10 years
General
  • Country of origin
    Germany
  • Type of use
    Commercial and Residential
  • Care and cleaning
    Easy maintenance
  • Installation
    Professional installation required
  • Assembly
    Professional assembly required
Scope of use
  • Premium doors in public circulation zones, staff wings or clinical administrative spaces where aesthetics and durability matter.
    • Joinery doors (e.g., custom cabinetry, architectural doors) where design continuity and hardware alignment are required.
    • Doors where coordinated hardware finishes (handles, hinges, flush bolts, door stops) are specified to meet architectural finish schedules.
    • Environments where cleaning/maintenance regimes are rigorous — stainless or anodised finishes can meet hygiene/climate demands.
    • Where the designer wants a timeless aesthetic rather than a purely commercial “off-the-shelf” look.
Features
  • Clean-lined lever profile; stands out for its minimal yet elegant aesthetic suited to premium interiors. 
    • Available for multiple door functions: passage (non-locking), privacy (bathroom), dummy (non-operable), and keyed/lock sets. 
    • Compatible with a variety of roses, escutcheons, and back plates (round, square, oval) enabling flexible coordinate hardware design across the project. 
    • Broad finish selection: aluminium anodised (0105 Natural Aluminium), medium/dark bronze anodised (0510 / 0710), black anodised (0810), powder-coat (e.g., 8120 Jet Black, 8220 Traffic White), stainless steel (6204 Satin 316, 6205 Polished 316), patinated bronze finishes (7615 Light Patinated Waxed, 7625 Dark Patinated Waxed). 
    • Manufactured in Germany (Brakel) to a high-quality standard; suits both residential and commercial usage. 
Specs / Details
  • Model: 12 1015 (FSB lever handle series)
    • Designer: Johannes Potente (for this variant)
    • Material options: Aluminium, Stainless Steel, Bronze (depending on finish) 
    • Suitable for hinge / swing / bi-fold / pivot doors (as noted in the product listing) 
    • Expected durability: FSB product literature indicates high usage categories (e.g., Class 4 “high use” for lever handles) and full coordination with door hardware systems.
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Halliday + Baillie
FSB 1015 Lever Handle

Halliday + Baillie