BSL Direct Sales, Inc. is a family owned, second-generation business that was founded in 1962 by Arthur Lazeroff under the name Rochester Window Industries. In 1986, Arthur's son, Mark Joined the company and in 1993 the company became incorporated as BSL Direct Sales In 2002, BSL Direct Sales, Inc., DBA Wonder Windows moved to its current location at 634 South Avenue. Wonder Windows carries quality custom windows in every price range. We have the lowest prices on glass block, vinyl and energy star windows!