These signs are for means of location and identifying fire preventing equipments.
Size
FE 01 - FE 07 = 150 * 150 mm / 200 * 200 mm
FE 08 - FE 12 = 250 * 200 mm / 375 * 250 mm
FE 13 - FE 33 = 100 * 300 mm / 150 * 400 mm
FE 34 - FE 35 = 300 * 100 mm / 400 * 150 mm
FE 38 - FE 38 = 150 * 300 mm / 200 * 400 mm
FE = 100 * 300 mm / 150 * 400 mm
FE 40 - FE 41 = 300 * 100 mm / 400 * 150 mm

These signs are for means of identifying different type of fire extinguishers for appropriate type of fire actions.
Size
FE 42 - FE 49 = 400 * 150 mm / 500 * 200 mm
FE 50 - FE 57 = 200 * 400 mm / 300 * 600 mm
FE 58 - FE 67 = 450 * 300 mm / 600 * 450 mm