21. The T1 option is not needed with FISCO product certifications; transient protection is included in the FISCO product certification codes IA, IB, and IE.
22. The V5 option is not needed with the T1 option; external ground screw assembly is included with the T1 option.
23. Gasket provided when lower housing is ordered.
24. NACE compliant wetted materials are identified by