MAGNUS™ uPVC 1800 Series Fixed Windows

  • Premium vinyl
    • Durability and longevity with unique formulation and high-definition finish.
  • Comprehensive design
    • Multichambered frame and interlocking reinforced sash with weather strips provide strength and efficiency..
  • Energy-efficient glass
    • Insulated glass (dual-pane) units with a high-performance stainless steel spacer system. 1/8 annealed glass is standard.

Product Description

Crystal Window & Door Systems Magnus uPVC Series 1800 Magnus vinyl windows are engineered for superior quality and performance. A variety of energy-efficient types and styles are available for commercial and architectural projects. Every Magnus uPVC Series 1800 window is custom-made to your specifications using premium vinyl, high-performance glass, and high-quality hardware. And each window performs with outstanding energy, acoustic, and structural properties.

Crystal Window & Door Systems is a proud long-term partner of REHAU, a global manufacturer of polymer-based solutions for construction, automotive, and industry. Founded in Germany more than 70 years ago, REHAU is known for delivering high-performance window and door solutions, with uncompromising attention to detail from design to profile extrusion to service. REHAU offers a variety of styles from typical residential hung-slider, casement, and patio door to the most advanced European-style tilt-turn windows that achieve the highest structural, thermal, and acoustical performance ratings.


  • Enhance any color scheme
    • Available in beige and clay premium vinyl. A wide variety of high-performance decorative finishes also available, including solid colors and woodgrains.
  • Increase energy efficiency
    • LowE3 performance glass and Argon gas available. LowE3 performance glass with Argon gas (LE3/Ar) is available and recommended to increase energy efficiency and meet California’s energy requirements, Title 24, Part 6.
  • Improve acoustical properties
    • Dissimilar glass units and laminated glass available.

Types & Styles


Choose from casement, awning, fixed, and combination windows to create the greatest views imaginable. Other combos available. All windows are viewed from the exterior.

Grid Patterns


A variety of between-the-glass aluminum grid options are available. Adding grids may improve energy performance ratings.

Grids may not be available due to product type and or size. Marginal and Queen Anne are not available with swing doors.

Specialty Glass


A variety of semi-opaque patterned and tinted glass options are available, including the most popular types, Obscure, Rain, and Matte.

Patterns and tints shown are not exact and may vary. Samples available through a Crystal authorized dealer or representative.

Decorative Finishes

Decorative finishes are high-performance multilayered films that are resistant to weather, chemicals, and UV. Select from a wide variety of solid colors and woodgrains to enhance any color scheme.

The following colors are just a sample of the many decorative finishes available.

Colors shown are not exact and may vary. Samples available through a Crystal authorized dealer or representative.