ASL 1023
The FSB 1023 is inspired by the original Ulm handle created by Max Bill and Ernst Moeckl in the 1950s. Johannes Potente’s version refines this concept into a more elegant, expressive form featuring bold curves and a gracefully tapered grip
FSB 1023 is offered in a wide range of options:
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Functional types: Available for doors as passage (latch), privacy (WC), dummy fixed, euro-profile, or key-locking configurations.
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Roses and backplates: Options include standard, narrow profile, plug-in, fully flush roses, and various backplate styles. Window versions also available (standard, lockable, plug-in, flush, push-in, compact, tilt & turn)
Materials & Finishes
The FSB 1023 is available in a broad range of high-quality materials and finishes including:
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Satin Stainless Steel
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Polished Stainless Steel
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Polished Silver Anodised Aluminium
- Bronze (Lightly Patinated Waxed, Dark Patinated Waxed) – Real Bronze Material
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Blasted Bronze Anodised (Medium, Dark)
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Blasted Black Anodised
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Powder-coated Aluminium (White RAL 9016, Black RAL 8120)
- New aluminium Pure
Options can be specified with rectangular roses or backplates (short or long) to suit a variety of applications.
Accessories, bathroom privacy thumb turns & release, door stop
FSB’s broader finish palette is underpinned by architectural thinking—colours and treatments are made to elevate both tactile experience and visual coherence in building interiors. FSB Finishes

FSB 1023 Polish Silver Anodised

FSB 1023 Bronze Light Patinated Wax

FSB 1023 Bronze Dark Patinated Wax

FSB 1023 Satin Stainless Steel

FSB 1023 Polish Stainless Steel

FSB 1023 Medium Bronze Anodised

FSB 1023 Dark Bronze Anodised

FSB 1023 Blasted Black

FSB 1023 RAL 9018 White Colour Coated

FSB 1023 RAL 9005 Jet Black Colour Coated
