Replacement ballast
means a ballast that:
(1) is designed for use to replace an existing ballast in a previously installed luminaire;
(2) is marked “FOR REPLACEMENT USE ONLY”;
(3) is shipped by the manufacturer in packages containing not more than 10 ballasts; and
(4) has output leads that when fully extended are a total length that is less than the length of the lamp with which they are intended to be operated.