Double Glazing Unit (DGU)
The double glazed unit (DGU), which fits within a window frame, is comprised of seven components:
- A Spacer Bar – a frame that separates the two panels of glass, creating a cavity. The spacer bar can be aluminium or warm-edge.
- Desiccant – a silicon material used in the spacer bar to dry up moisture trapped within the cavity
- A primary seal – the main barrier to air or moisture migration into the double glazed unit (DGU)
- The glass – clear, solar control, Low E, self-cleaning, acoustic, toughened, laminated or a combination
- The secondary seal – the main structural adhesive around the outside edge of the unit, holding all the elements together
- The cavity – the void formed between the component parts
- The gas filling the cavity – dehydrated air, argon, krypton or xenon.