This is for sheets of 16mm Opal Triple wall polycarbonate which are available in various sizes. 16mm OPAL Triple wall Polycarbonate. 10mm & 16mm Polycarbonate Sheets - Clear / Opal / Bronze. Rafter Supported Glazing / Joining Bars for 10mm & 16mm Polycarbonate - Brown & White or Anthracite Grey.
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