We were very happy with Greg Hartmann’s work and his products. I have arthritis in my hands and was concerned that the casement windows would be hard to open. Happily, as Greg thought they would be, they are VERY easy to open.We appreciated Greg’s friendly advice and the fact he was the one who gave us the quote AND he was the one who came and actually DID the installation. This is NOT true for the 2 other window/door quotes we got. We would recommend Greg for his knowledge, patience ! and workmanship.