Stronger Window-Wall

The Series 4800-T is scheduled to be released in late 2017. It is being designed to emulate the clean lines of the 3800-T but with these additional features:

  • Innovative Thermal Barrier
  • Lower U-Factor performance than the 3800-T
  • 6" Deep Frame
  • An even narrower sight-line than the Series 3800-T (1-7/16")