Stacking

Configuration of the 'stack' or 'sash' that remains when the retractable security grille is open

Citadel Security Grilles Click to enlarge
Measuring up for a single sash Citadel Security Grille. Shown with folding track

Single Sash Left: One retractable security grille locking to the left (viewed from the inside) is used to secure the window or door.

Single Sash Right: One retractable security grille locking to the right (viewed from the inside) is used to secure the window or door.

Double Sash: 2 retractable grilles are used to secure the window or door. The grilles lock in the centre.

Fixed Grille: Non retractable security grille, can be used if no access is required.

Citadel Security Grilles Click to enlarge
Measuring up for a double sash Citadel Security Grille
Citadel Security Grilles Click to enlarge
Citadel Fixed Sash Security Grille