"We used Suburban Construction for new windows in our house and we're glad we did. They are energy efficient, and make our house much warmer. The company is very professional. I would recommend Suburb... » more
- Jeff Louck of Davenport, Iowa


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Extension Unit

A framed fixed door panel, with a full-sized lite of glass, field-installed or shop-installed adjacent to a two-panel patio door, to make the door unit into a three-panel door.

Not quite sure what the proper home improvement terms are? Let us help. We have put together a glossory for you to learn a little bit more about Home Improvement Glossary and Terms

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