Kinda surprises me that they all advertise 36 volts to the motor. I remember BITD there was a big "to do" about 36 volts being above the "Class C" wiring spec. 24V, or less, meeting "class C" and all the analog Mfgrs changed their motor voltage to meet the "class C" specs. Come to think about it, I never did check the motor voltage on the Gbox I installed about a year and a half ago, But I do know the Toshiba I had used for years was one of the "early" models with a full 36+ volts. BITD- Class C did not require an electrical inspection or installation by a licensed installer. Has this changed? (Inquiring mind WTK)