We decided to replace our 35-yr-old patio doors and windows but had no idea who to choose to install them. We knew we wanted an Andersen product, so we contacted the Andersen rep for our area. He recommended Jeff Klein Construction, and Jeff and the representative helped us select the best product for our needs. It took a while, but it was worth the wait. We ordered the materials from LenCo Lumber, where Kevin (owner) was terrific and told us that Jeff was a solid guy. Jeff and his partner, Mark, we more than that. They did an excellent job and exceeded our expectations. We strongly recommend Jeff for any home improvement project.