Trade Pro Round Run Capacitor - 35+5 MFD - 440V TP-CAP-35/5/440R. The HCK Series Capacitors are designed and manufactured in accordance with UL 810 and EIA standard RS-456. They have an unpainted aluminum case and steel cover and are capable of an operating life of 60,000 hours with a 94% chance of survival. Product Dimensions are relative to the shipping box size, not the capacitor itself.