Flexi-Glass Transfer Sheets (FG Transfer Sheets) The other special component of the Flexi-Glass system. FG Transfer Sheets are a specially designed plastic that A) Does not cause the FG Medium to bead up when applied wet, B) will withstand temperatures up to 350º for drying the FG Medium and C) will not stick to the FG Medium after it is dry. FG TS come in 9” x 12” sheets with five sheets per pack. They are also in the FG KIT.