"They did a really, really good job on our windows and doors, and the windows are so easy to clean. We feel comfortable doing business with Suburban because they're a hometown business, the peopl... » more
- Harvey and Arlene Clausen of Bettendorf, Iowa


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Mull

A short term for mullion. Used occasionally as a verb to describe the joining of two door or window units together, or the joining of a door to a sidelite unit.

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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