Old Corrugated Cardboards OCC 11OCC consists of corrugated containers having test te, or Kraft. Prohibitive Materials may not exceed 1% Total Out throws may not exceed 5% Double-Sorted Old Corrugated Cardboards (DSOCC)Double-sorted OCC consists of used corrugated boxes generated from indoor industrial sources. The cartons are sorted at the source and again before baling to provide the cleanest and driest form of post-consumer unbleached Kraft available.