ALLROUND timber-alu flush

For pricing, please use the Request a Quote form linked below

For Units >20-25 SF:
● Fixed units from $48/SF
● Operable units from $75/SF

Pricing is an approximation only. Formal quotes will be priced according to drawings and customizations to reflect project-specific demands.

All Optiwin windows are available in Custom Dimensions and Fully supported by 475 for best performing installation detailing (thermal bridges/airsealing).

Product Specifications

The ALLROUND timber-alu series is a modern twist on the Allround timber-alu system. This series offers wood windows with exterior aluminum cladding, designed to offer a streamlined , flush frame, with durable Roto hardware and is available in several wood and finish options.


  • Frame width: 3 11/16" — 4 5/8"(95—118 mm)
  • Gaskets: 4
  • Suitable for low energy and Passive house in most USA climate zones
  • Customizable high or low SHGC
  • Available in spruce (standard), oak, fir, pine, larch, and “reclaimed” wood
  • Options for hardware, insect screens, alu-sills and interior/exterior finishes
  • Foam-free frames insulated with wood fiberboard
  • Exterior finish: available in any RAL ( color of your choice
  • Interior finish: available in a variety of opaque or stained finishes, RAL colors or primed to be finished on-site
  • Options for hardware, insect screens, alu-sills and roller shutters, electric motors
  • Optiwin windows are fully recyclable to avoid waste


  • Customizable high or low SHGC (30-40-50)
  • Uwindow: 0.132 Btu/h ft2 F (0.75 W/m2K)
  • Uglass: 0.088 Btu/h ft2 F (0.5 W/m2K)
  • Super Spacer: 0.016 Btu/h ft2 F (0.028 W/m2K)