Duvinage Spiral Stairs Fabrication to Be Featured on 'How It's Made'

HAGERSTOWN, Md., Oct. 20, 2017 /PRNewswire/ -- Duvinage, the nation's leading custom spiral stair manufacturer since 1895, announced that it is going to be featured in a new episode of the How It's Made series on Discovery Channel. The episode will air in Canada on Oct. 30 and then ag...