The clever design of the patented TwinSash outerframe accommodates two sash frames and positions them one in front of the other. The result is an air-tight pocket, sandwiched between two thermally efficient sash frames. TwinSash was the UK's first 'A' rated window.

All components are compatible with System10 and Rustique, minimal tooling is required and it accepts all standard hardware. You can be manufacturing TwinSash within days. TwinSash is easy to manufacture, simple to install and more than meets the demands of today’s market. 

Key Features:

  • Ideal for Passivhaus applications
  • Suitable for where external cladding is present to complement the windows depth
  • Manufactured from standard Halo profile - System10 & Rustique compatible
  • Minimal tooling set-up
  • Accepts all standard hardware
  • Both open-in and open-out formats feasible (Casements, Tilt & Turn)
  • Standard installation procedure
  • Maximum sizes (mm):
    • Casement - up to1250w x 1250h
    • Tilt & Turn - up to 900w x 2100h
Halo TwinSash Wall Chart
Halo Rustique TwinSash Fabrication Manual
Halo Installation Guide
Halo TwinSash A4 Leaflet
Halo Designed for Living Brochure
Variations 2019

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