Fill
S2-3760-OF-1: No drainback system
S2-3760-OFD-1: With drainback system
2 Fills
S2-3760-OF-2: No drainback system
S2-3760-OFD-2: With drainback system
Fill & VR1b
S2-3760-OF-11: No drainback system
S2-3760-OFD-11: With drainback system
2 Fills & VR1b
S2-3760-OF-21: No drainback system
S2-3760-OFD-21: With drainback system
