How is Reading PG 58-22 pronounced?

• A. Performance Grade 58 minus 22
• B. Performance Grade 58 plus 22
• C. Performance Grade 58 times 22
• D. Performance Grade 58 and 22

Answer: (A)

The dash in a Performance Grade designation separates the high-temperature rating from the low-temperature rating, so it’s spoken as “minus.” Reading PG 58-22 is pronounced “Performance Grade fifty-eight minus twenty-two,” indicating a high-temperature grade of 58 and a low-temperature grade of -22. The other options would read the symbol as plus, times, or with an “and,” which doesn’t match how PG designations are spoken.