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Economical and universal cavity closers to close the cavity at external doors, window jambs and sills to provide thermal insulation and prevent damp and cold bridging. Rigid and lightweight UPVC profiles fitted with expanded Polystyrene insulation material (0.038W/mk). Available to suit cavity widths of 50, 75, 90, 100,125 and 150mm wider cavity widths available to order. The multi cavity width closer is the solution for projects with unknown or varying cavity widths pre-grooved insulation to offer cut lines for cavity widths of 50-100mm. Quick and simple to install. Supplied in convenient 2.4 metre lengths.
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