Rockwell's Module 500/40 glazing system is now available with a double 'X' wall structure polycarbonate sheet.

The improved design achieves a U-value of just 0.82 W/m2K to help specifiers achieve a high level of insulation for the glazing as well as the whole building envelope.

The sheet remains 40mm thick so fits within the existing standard or thermal break profiles as well as top hung windows offered for the 500mm wide tongue and groove Module 500 range.