Why do they make 32 gallon trash cans and 30 gallon trash bags?

32-gallon trash cans are designed to provide a convenient size for households and businesses that generate a moderate amount of waste. The 30-gallon trash bags fit these cans well, allowing for easy disposal and minimizing excess bag material. This pairing helps ensure that the bags can adequately contain the waste without being too loose or difficult to handle. Additionally, the slight size difference allows for some flexibility in usage, accommodating variations in waste volume.