MB-Slimline

Ultra-slim aluminum windows for maximum daylight

The MB-Slimline is a premium aluminum window system offering exceptionally narrow visible sightlines, designed to maximize natural light and provide a sleek, minimalist aesthetic. It is perfect for capturing expansive Pacific Northwest views while delivering the robust thermal and acoustic performance required for modern high-end builds.
MB-Slimline also comes in a hidden sash variation, making the operable window completely invisible from the exterior.

Performance

  • U-Factor: from 0.15 Btu/hft²F
  • SHGC: 0.17 – 0.42
  • Noise Reduction: Up to 42 dB

Characteristics

  • Hidden Sash Option: Operable vents are concealed behind the outer frame.
  • Exceptionally narrow visible frame profiles.
  • Frame depth: 2-11/16″ (68.5 mm).
  • Glazing: Up to 81 mm (Triple or quadruple pane ready).
  • High-performance polyamide thermal breaks.
  • Wide range of powder-coated colors and anodized finishes.
  • Available with nailing fin.

Benefits

  • Maximum daylight: High glass-to-frame ratio allows for expansive, unobstructed views.
  • Minimalist design: Ideal for contemporary architecture or replicating the classic look of steel windows.
  • Structural durability: Heavy-duty weather resistance engineered for coastal wind and rain.