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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.

Horizontal Slider Recommended SizesHorizontal sliding secondary with SF3 subframe for reveal fixing

  • 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 Verical sliding secondary with SF3 subframe for reveal fixingRecommended Sizes

  • 400mm - 1500mm wide, 900mm - 2800mm high.