- Heavy duty double rollers.
- Smooth operation & durability.
- No unfinished or exposed edges.
- Great aesthetics clean with ease.
- Hollow sections = Added strength.
- Better energy efficiency & acoustic results.
- No internal projection of transom or sash sections.
- High quality sealing system = Low air infiltration rates.
- Available in frame widths of 48mm, 65mm,75mm & 100mm.