Heavy Duty Secondary Glazing
Our heavy duty secondary glazing is designed to take double glazed units and is stronger for larger windows. Heavy duty secondary is available in either horizontal or vertical sliding units in reveal fix. (Can take single glazed units if required)
Types Of Secondary Available In The Heavy Duty System:
Although our Lift Out units, Hinged Units and Fixed are not availiable in the Heavy duty system they are available in our Economy and Subframe systems.
Horizontal Slider Recommended Sizes
- 2 panels: 800mm - 3000mm wide, 400mm - 2400mm high.
- 3 panels: 1200mm - 4500mm wide, 400mm - 2400mm high.
- 4 panels: 1600mm - 5000mm wide, 400mm - 2400mm high.

Vertical Slider Recommended Sizes
- 400mm - 1500mm wide, 900mm - 2800mm high.






