The SmartBlox 2.0 setting blocks by Lamatek are an 85 durometer, elastomeric material with no harmful phthalates that flexibly cushions insulating glass units and supports dead load. Installed between the window sash and IGU to protect the glass from impacts and fractures, and protect the glazing bead integrity, SmartBlox 2.0 is compatible with all glazing sealants and systems where shims may come in contact with PIB in spacers.