FSB 1291 Door Lever Set • Casson

FSB 1291 is part of FSB's Standard Mortise Lock (SML) program — German-engineered architectural door hardware known for precise proportions and a tactile, ergonomic grip.

Foster + Partners Industrial Design drew FSB 1291 along a single freehand curve, with a short grip and soft geometry the designers describe as a play of light. It opens FSB's largest product family, which took the iF Design Award Gold in 2026.

Available in passage, privacy, single dummy, and double dummy configurations. Handing is required for single dummy.

Specifications

Lever dimensions: L 107.5 mm (4.23") × D 73 mm (2.87")
Rose / escutcheon: Ø 55 mm (2.17")
Door thickness: 45 mm (1.77")
Function Options:
- Passage: Latches without locking, for doors that don’t require privacy · Backset 70 mm (2.76") · M1 spring latch
- Privacy: Locks from one side with a thumbturn and emergency release · Backset 70 mm (2.76") · M1 spring latch
- Single Dummy: One fixed, non-latching lever for push/pull doors · Backset 70 mm (2.76") · Handing required
- Double Dummy: A fixed, non-latching lever on each face · Backset 70 mm (2.76") · No handing required

Important: European roses are typically smaller than standard North American models, with many measuring approximately 50 mm in diameter. Rose sizes can vary by brand and range, so please review all dimensions carefully. These handles may not fit existing or pre-bored door holes without adjustments.

Materials

Solid stainless steel or anodized aluminum, depending on finish.

Available Finishes

Satin Stainless Steel
Polished Stainless Steel
Natural Anodized Aluminum
Aluminum Pure Natural
Dark Bronze Anodized
Black Anodized
Black Powder Coat

Product Downloads

Product Sheets

Authenticity

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