Andersen Windows have been the first choice of builders and homeowners alike for over a century. John’s Lumber has been an Andersen dealer for as far back as anyone here remembers, and that’s a long time considering John’s is over 60 years old! Buying windows is pretty easy with John’s Lumber. Our experience with Andersen Windows will insure your project goes right, right from the start. Andersen Windows offer low-maintenance exteriors and the new Low-E4 glass that stays cleaner and reduces water spotting. Perfect for keeping the view outside beautiful, while saving energy.