Hidden Sash Block

By Huu Khanh Nguyen · Updated October 25, 2026 · Aluprof, hidden-block

A sash that sits wholly behind the outer frame, so that only the glass shows from outside.

Parameters

Name	Default	Unit
Face width	61.3	mm
Depth	73	mm
Rebate depth	24.2	mm
Rebate width	35.55	mm