What holds the two pieces of an insulated glass unit together?

A metal channel sealed with a hot-melt butyl sealant, but not all spacers are the same.

Concept-1 windows come standard with the Intercept Warm-edge Glass Spacer System

  • Warmer indoor glass edge temperatures provide excellent condensation resistance.
  • U shaped channel vs. box shaped channel - cold and heat take a longer time to travel around the U-shape
  • U-shaped spacer is more flexible allowing sealant to expand and contract with less risk of stress cracks or seal failure.
  • Tin-plated steel is 88% less conductive than aluminum - maintaining a more consistent glass surface temperature.


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Waukesha, WI 53186
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Local: 
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