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High Performance ProductsFiberglass Framing System

Alpen Zenith Series fiberglass windows framing system offer high performance advantages including:

  • Superior strength-to-weight ratios makes Alpen Zenith Series fiberglass windows ideal for large window openings
  • Low coefficient of thermal expansion and contraction; stresses on seals, caulks and joints are minimized, contributing to greater resistance to air leakage and water penetration
  • High condensation resistance prevents risk of mold
  • High glass-to-frame ratio offers more viewing area compared to wood windows
  • Offers the aesthetic appeal of classic wood clad windows but with 2x better insulation
  • Takes paint easily compared to vinyl or aluminum for color and design flexibility over the life of the windows