Steel Double Doors: Steel double doors can operate in many configurations. Pairs of metal doors may be hung as Energetic/inactive pairs exactly where 1 doorway features as the principal doorway and the other remains fixed until it’s disengaged. A40/A60 – Galvanneal Steel Doors w/ Primary Coat: Galvanneal steel is manufactured http://dailycategories.com/directory/listingdisplay.aspx?lid=29803