"0.750 IN. MAX THK INSULATION ENVELOPE CRES FOIL WITH INNERSKIN 0.002 IN. THK OUTER SKIN 0.003 IN. THK,INNER SKIN HAS VENTHOLES 0.190 IN. DIA,MAX EXTERNAL SURFACE TEMP 500 DEG F,MAXINTERNAL SURFACE TEMP 700 DEG F,ENVIRONMENTAL 345 DEG F FREECONVECTION AIR"