• Solid timber sections – no finger joins or vaneers
  • Drop bolts fitted to bottom of sash as standard
  • Top hung roller operation with sill guide track
  • Superior weather seals to internal sash rebates and on sash to sash joints
  • Frames assembled with zinc coated screws using the latest European technology


  • Heavier sections provides increased structural strength, stability and aesthetic beauty
  • Corrosion resistant and water tight joints resulting in a longer lasting window
  • Quality surface finish allows your painter to achieve an excellent painted/stained product outcome
  • Centor drop bolts ensure secure sash locking points – slimline drop bolts gives a modern look.
  • Top hung roller operation provides less weight on sill for smooth and easy sash folding
  • Multiple sash and configuration options available for personal taste
  • Superior weather seals prevent air and water infiltration

View Product Specification Timber Bi-Fold Windows (PDF)