Durable and robust universal cavity closer. Features a fully rigid XPS (extruded polystyrene) plastic closer for a continuous insulation fill. The profile can easily be cut using the pre-cut grooves and installed on 100-150mm cavities. Suitable for all types and age of masonry wall from new build to refurbishment. Plastic Will Fit 100-150mm Cavities Pre-Cut Grooves to Easily Modify Insulation Width to Fit Cavity Provides Continuous Cavity Insulation Around Windows & Doors Quick & Easy to Install Meets Building Regs Minimum Thermal Resistance High Quality Non-Degradable Materials XPS Insulation Fill High Thermal Performance Path of 0.88 m²K/W Plastic Will Fit 100-150mm Cavities Pre-Cut Grooves to Easily Modify Insulation Width to Fit Cavity Provides Continuous Cavity Insulation Around Windows & Doors Quick & Easy to Install Meets Building Regs Minimum Thermal Resistance High Quality Non-Degradable Materials XPS Insulation Fill High Thermal Performance Path of 0.88 m²K/W