A range of cavity closers that provide an accurate window template during construction, insulates the cavity and ensures efficient window installation.

Constructed using recycled material, compliant with all current regulatory and insulation requirements and available in standard and check reveal cavities from 75mm to 150mm.


  • Manufactured from the Duraflex 100% eco friendly recycled material
  • Cavity widths 75mm, 90mm, 100mm, 115mm, 125mm and 150mm
  • Check and standard reveal
  • Recycled mechanical joint corner mouldings
  • Recycled cross brace
  • Overhead vent section available in a range of finishes to compliment all window styles.


  • Eliminates moisture penetration around reveals
  • Acts as brickwork former
  • Eliminates thermal bridging in accordance with part L regulations
  • Assists Building Regulation compliance for air tightness
  • Overhead vent incorporating external flush grill for improved aesthetics


  • Assessed to the thermal Path method (0.45m2/KW) BBA approved/certified (04/4902)