T2=Type II, T3=Type III, T4=Type IV, SL2=Type II w/Spill Control, SL3=Type III w/Spill Control, SL4=Type IV w/Spill Control, RW=Rectangular Wide, 5MQ=Type V Square Medium, 5WQ=Type V Square Wide ,5XQ=Type V Square Extra Wide, SLL=90° Spill Light Eliminato