"We just wanted to tell you how pleased we are with the patio door that was installed and the Gutter Caps that were installed several weeks ago. The patio door looks great and we love the Gutter ... » more
- Harlan and Sandy Henzen of Davenport, Iowa


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Low-Conductance Spacers

An assembly of materials designed to reduce heat transfer at the edge of an insulating window. Spacers are placed between the panes of glass in a double-or triple-glazed window.

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