The Window Source of Atlanta installed these 6000 series casement windows- overlooking Lake Lanier. Enjoy the beautiful lake view with crystal clear casement windows from The Window Source of Atlanta. Just in time to enjoy the crisp fall air with a few spins of the handle on these beautiful casement windows. Lifetime warranty and maintenance free are a bonus. Looking for a quote of replacement windows at Lake Lanier or Gainesville? Give us a call 470-275-5159.