Pendock floor ducting is a two-part system comprising a pre-formed tray, produced from 22 gauge hot dipped galvanised mild Steel (to BS 2989: 1982 class Z2) and a 12mm plywood cover (to BS 1203: 1979). Return flanges give recessed support to the pre-cut plywood covers, laid flush with the rest of the finished floor. Pendock floor ducting is designed for fixing to the surface of the sub-floor before screeding, facilitating access for subsequent maintenance to pipes and Cables.