System 4-20 Hi+

Thermally Enhanced Casement Window

Metal Technology's System 4-20Hi+ offers the designer a wide and diverse range of profiles that will provide structural integrity, weather performance, thermal enhancement and security. Now a highly cost-effective glazing solution, the System 4-20Hi+ complies with and in many cases exceeds current building regulations.

Available Revit Family Designs

  • Adjustable dimensions (width and height)
  • Adjustable mullions and transoms
  • Window vent/fixed light toggle switch

Revit Family Parameters

Weather Performance BS 6375
Wer B Rating
U-Value By calculation, subject to glass specification
Size Limitations See section 3 of technical manual
Security BS 7950 / PAS 24
Section Depth 50mm
Materials Aluminium alloy 6060T6, T5 or T4
Glazing 24mm to 34mm
Finishes Anodised / PPC single / Dual Colour
Breeam A+ rating
Acoustic BS EN ISO 140-3 / BS EN ISO 717-1
Model System 4-20Hi+
Manufacturer Metal Technology
Keynote Metal Technology System 4-20Hi+
Description System 4-20Hi+ Thermally Enhanced Casement Window


RFA files for each design show above.
General Arrangement Detail - CAD.
General Arrangement Detail - PDF.
Generic Specification - MS Word.
User Guide - PDF.