New Jersey Statutes Title 51. Standards, Weights, Measures and Containers 51 § 10-18

No supplier of liquefied petroleum gas to residential dwellings shall discontinue or curtail its service for nonpayment of a bill by any customer who uses the gas as a main source of space heating without giving a prior seven day, excluding Saturdays, Sundays and holidays, written notification in six-point type or larger on the front of the invoice or in a separate notice, to the customer of the intent to discontinue or curtail service; provided, however, that any notification after January 1, 1984, shall be in 10-point bold type or larger.