Input (grade 5): The heating oil futures contract trades in units of 42,000 U.S. gallons (1,000 barrels) and (for the USA) is based on delivery in the New York harbor.
Output (grade 6): These futures contracts trade in units of 42,000 gallons, which is the same as 1,000 barrels. Prices are based on delivery in New York City harbor, the main cash market trading center.