50¢ off Two Boxes any flavor Fiber One Products Posted by Port Authority on 5 September 2017, 10:19 am Tweet The Coupon Expires 30 days from print (The print limit is two) Click here to print a coupon for 50¢ off TWO BOXES any flavor Fiber One Chewy Bars, Fiber One 90 Calorie Products (Bars or Brownies), Fiber one Protein Chewy Bars, Streusel Bars, Cheesecake Bars, Cookies, Layered Chewy Bars or Protein Nut Bars.