How is the gas fill added to a sealed unit?

During sealed unit gas filling, the two panes of glass are brought together under controlled pressure, and inert gas (such as argon) is injected into the cavity. Sealed unit gas filling helps reduce heat transfer, improving the energy efficiency of the window. Glasscraft ensures that every sealed unit gas filling process is carefully monitored for the best thermal performance.

U-Values WER - Window Energy Rating Sealant Desiccant Gas Spacers Manufacture Product