Choose the G40 cavity closer from Manthorpe for creating an effective thermal break and vertical DPC barrier. Constructed in lightweight material, this cavity closer is designed with a double flange feature for compatibility with inline cavity wall details and can be cut easily and precisely with a saw. Choose a length to suit your project and the G240 installs quickly and easily without the need for any special tools. Shorter lengths can be joined together, meaning less wastage from your purchase. Lengths can be joined easily together without losing thermal efficiency, and frames can be preformed into frames for maximum flexibility. The G420 cavity closer can also be attached with Manthorpe's dedicated fixing clips, tying the closer right into the masonry as you move along. If you're working on a refurb project, the closer can be screwed and plugged through fixing holes (provided). Non-load-bearing, the G420 cavity closer provides insulation with a GWP rating of less than five and meets standard BS 5250:2011 for control of condensation in buildings. Manthorpe Cavity Closer Specification Length: 2.5mCavity Width: 50mmExtrusion Material: UPVCStyrofoam: CFC free Extruded PolystyrenePack Quantity: 6 Lengths