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Tupai Ref. 4275 5SQ interior door handle
Tupai · Privé · Full Square Rose

Ref. 4275 5SQ

Tupai · Made in Portugal

The 4275 lever squared off — handle and rosette in the same geometric language for minimalist interiors. Both the lever section and the full-square rose are built around the same rectilinear geometry. Specified by architects on minimalist projects where every piece of hardware is meant to share the same vocabulary as the casing and the doorframe.

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. 4275 5SQ — dimensions, mounting details, finish codes, and accessory references. Provided by Tupai; shared here for project specification.

Technical drawing

Ref. 4275 5SQ · Drawings & tech info

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Specify this handle

Specify Ref. 4275 5SQ 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. 4275 5SQ