This table shows stack size and clear opening width against overall grille width for both single and double sash security grilles. All measurements are in millimetres
These measurements can be affected by overall grille height, so please jump to the table relevant to your grille using the links below.
Table for grilles up to 2359mm overall height.
Table for grilles from 2360mm to 3059mm overall height.
Table for grilles over 3059mm overall height.
Table for Citadel Plus grilles.
Please note: The clear opening widths detailed above apply to retractable grilles with fixed tracks. If the grille requires folding bottom tracks or the hinge aside option (with or without folding bottom tracks) you will need to add 60mm per stack to the stack sizes above.
Please ask for details on widths greater than those shown above