D & R Skylite Installation installed a 4 X 4 skylight over my kitchen island and put a sun tunnel in my dark and dreary hallway. Paul took the time to make the best assessment of where to put the skylight to get the best lighting conditions and fit that into existing trusses. I was very impressed with the customer service, their workmanship and over the moon with the result! I have more light in my kitchen and living area and the sun tunnel in the hallway has turned dark and dreary into light and airy. Highly recommend.