The role of Aluminum Sash Window Crescent Lock is specific: it is used for aluminum sliding-window sashes requiring a compact crescent latch at the centre meeting point. Available finger clearance and the distance between meeting rails affect whether the lever can complete its movement. This makes meeting-rail spacing a necessary part of the selection record.
Selection Checklist — meeting-rail spacing
To avoid an incompatible aluminum meeting-rail lock selection, record each item before the hardware schedule is frozen.
1. meeting-rail spacing
2. lever clearance
3. keeper geometry
4. aluminum profile finish
Application Boundary — Aluminum Sash Window Crescent Lock
Use within compact sliding sash fastener is governed by the real assembly, not only the catalogue image. The sash-mounted lever rotates into its keeper to retain the closed window without a separate long transmission bar. Record meeting-rail spacing before comparing samples.
Product Configuration — E1
These configura…