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High Performance ProductsZenith Highlights

Alpen Zenith Series Windows combine an advanced glass package with superior fiberglass framing systems to achieve high insulation performance across the full-frame — not just measured at the center of glass.

  • “Tuned” to your home’s unique location and solar exposure: Our tuning expertise and glazing options will ensure the right amount of heat to warm or cool your home for thermal efficiency, maximum comfort, and reduced energy usage.
  • Custom made to match your home’s distinctive architecture: Alpen Zenith Series Windows are available in multiple sizes, styles, shapes and colors and with optional stainable wood veneers. Alpen Windows are custom made to meet your home’s exact specifications and style at no extra cost.
  • Traditional classic wood window aesthetic: Alpen Zenith Windows offer the beauty and look of classic wood windows. Alpen Windows fiberglass windows offers custom stainable interior wood veneers and classic lines and grid profiles that match the feel of wood windows but without the hassle, weight and maintenance.
  • High strength, low conductivity fiberglass frame: Fiberglass is considered the “greenest” material for window frames. Fiberglass offers durability, better thermal performance, and lower embodied energy than vinyl, aluminum, and wood framing materials.
  • Clean, contemporary hardware: Alpen Zenith Series Window hardware offers a unique, clean, contemporary design that does not obstruct views and reduces the tendency of the window to “walk” in buffeting wind conditions. The hardware finish is engineered to resist a wide range of corrosive materials.
  • Multi-seal weatherstripping design: Alpen Zenith Windows conform to the rain screen principle with high quality air and water tight seals.
  • Fiberglass insect screen: Our screens are easily removable, non-glare, fiberglass. They will not rust, corrode, stain or impede visibility.
  • UV protection: Zenith Series Windows are engineered to block up to 99.5% of harmful UV rays. Our advanced glazing systems reduce fading and interior damage and contribute to a healthy indoor environment – all without obstructing natural lighting and visibility.
  • Lifetime warranty: All Alpen Zenith Series Windows are covered by a limited lifetime warranty.
  • Easy, safe cleaning: Zenith Windows are designed to tilt-in, lift-in or pivot-in, which allow you to easily and safely clean your windows from the inside of your home.