"Bob, We wanted to drop a note to let you know how much we appreciate the work that was done at our home. The Gutters, windows, siding and doors all look great and are exactly what we wanted. Eve... » more
- Don and Sherrie Frieden of Muscatine, 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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