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Tupai Ref. 3957 5S interior door handle
Tupai · Privé · Thin Square Rose

Ref. 3957 5S

Tupai · Made in Portugal

The same 3957 lever on the 5S thin square rosette — a modern edge against the same quiet handle profile. The 5S rosette is the slimmest square Tupai produces, set almost flush against the door face. The combination softens the geometry of the square rose with the more rounded grip of 3957 — a quiet but architectural pairing.

Configure the finish
PVD Pearl Champagne
Choose function
Passage

Latch only — no locking mechanism. The lever turns the spindle and retracts the latch. Specified for hallways, closets, pantries, and pass-through doors that never need to lock.

Add a lock body
In the details

Portuguese precision in cast zamak.

Material

Cast zamak — Tupai's signature low-pressure zinc alloy. Plated, satin-finished, or PVD-coated for the colour palette.

Finishes

6 published: Satin Chrome, Nickel Pearl, White Pearl, Titan, Black Pearl, PVD Pearl Champagne.

Accessories

Roses, escutcheons, WC turn pieces, and cylinder covers all matched in finish across the rosette family.

Made in

Portugal. Family-owned manufacture by Tupai in Águeda since 1976.

Specification downloads

Drawings & installation guide

Tupai's technical drawing and installation instructions for Ref. 3957 5S — dimensions, mounting details, finish codes, and accessory references. Provided by Tupai; shared here for project specification.

Technical drawing

Ref. 3957 5S · Drawings & tech info

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Specify this handle

Specify Ref. 3957 5S for your project.

Tell us the door, the room, and the cabinetry it sits with. We'll quote the right finish and ship samples to your studio.

Inquire about Ref. 3957 5S