After moving into a 6+ year old house, we found one window had a cloudy substance between the glass panes. We tracked down the installer to B & L Wholesale. I called & explained the problem to a very polite & helpful sales rep. He explained where to find the information on the window size so a replacement could be ordered. Unfortunately, the tag had faded, so he carefully walked me through the exact areas to measure. Once the window was ready, I brought the old window in & picked up the replacement. I was very much surprised that I was not charged for the replacement window. We were the second owners of the house & had no idea how long the window was defective. We did not know if it was a manufacturer defect or something coaused by the previous owners, & fully expected to pay for the replacement. B & L stood behind a product it sold, even though the defective item was several years old. They were helpful, professional & a pleasure to deal with. The replacement was a perfect fit! I would not hesitate to purchase from this company for any future remodeling project.