March 13, 2018
Mesker update 6-5, 6-6
Modifications to ST series doors to permit validation. New cores had to be created. ST-P Polystyrene fillers -P- prints on PO and ST-M Mineral Wool fillers -M- prints on PO
Door Edge H Square/Non-Handed Mechanically Interlocking will remain for use in submittals. Per Mesker, nothing will print on PO because this edge is standard.
Currently, this is only true for ST series but an update before the end of this week will remove the PO description from all doors using H edge.