RUN CAPACITOR [25 MFD] [40*70] [275VAC]-SERIES-LR4

The 40*70 mm can size for LR4 series fan run capacitors typically indicates a capacitance of, 25MFD to 72MFD  with a common voltage rating of 275V AC.

The exact microfarad (MFD or µF) value you need depends on your specific fan’s motor specifications. You should always aim to replace the capacitor with one that has the identical MFD rating as the original.

The voltage rating (e.g.,275V) indicates the maximum safe voltage. A capacitor with a higher voltage rating can be used as a replacement if the capacitance and size are correct. Ensure you turn off the power and discharge the old capacitor safely before attempting replacement.