Karoly came out to my home approx 1 month prior to install for exact measurements and discuss the new Simonton sliding door with us. The office managers kept on top of obtaining the needed county permits and let us know regularly what was going on all the way until the install day. 2 very professional installers arrived on schedule for the install and began immediately. They answered all of my questions willingly, they were well equipped, thoughtful and highly skilled. Entire install took approx. 5 hours start to finish. Karoly came to examine the install later in the day = while there he attempted to remove glue / adhesive from the glass and frame to no avail. He had to locate stronger cleaner, came back and spent approx. an hour cleaning off glue. The county did do a FINAL inspection as required and everything passed with no issues. Karoly and his team are true professionals and I would contract with them again without question. If new doors or windows are needed at your home, give them a call.