Jim and Charles came and gave us a quote for our bi-folding doors and window after carefully measuring up and asking our requirements. Their quote was very reasonable. They stuck to the quoted price even though it took them an extra 1/2 day to complete the install. The doors and windows were prefabricated in their factory and the workmanship was excellent. They both worked hard to complete the job even installing a lintel above the window for us. We are delighted with the outcome and the guarantee they offered. We would highly recommend them for anyone looking for bi-fold door and window installation.