"In this day and age it is very hard to find honesty and integrity in the siding and window industry. Their wealth of knowledge and experiences surpasses all others in their field. I would recomm... » more
- David and Dorothy Brasmer of Rock Island, Illinois


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RESFEN

A computer program used to calculate energy use based on window selection in residential buildings.

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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