"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


» More Testimonials

Nailing Fin

A feature of some windows and patio door which permits installation and fastening to a rough opening by nails or screws driven through the fin at the top and side edges of the unit, into the surrounding frame of the opening.

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

For furthur reading please see our Learn the Basics Homepage.