Fortress Building Products customizable Deck Kits include the steel deck framing, stairs, decking, Al13 Plus aluminum railing, and hardware required to build out a 12-by-12-foot deck. Your customers can choose the configuration—free-standing or attached; the decking—Apex or Infinity I-Series decking (in a variety of colors); and the stair height—three, five, seven, or 10 steps, or no stair. Pricing starts around $7,300.