These ballasts (may be slightly different than the photo) are for replacing the two wire style used in jukeboxes, arcade (rifle games, etc.), and other games. CSA and UL approved, rated for 13W, 14W, 15W, 18W, or 20W, either T8 or T12 fluorescent tube size.
Halco ProLume series, Preheat (Starter needed) Ballast: Sound rated "A", Class P, Type 1 Outdoor, No PCBs, OCV<300V inherent thermal protection, type HL, Min. Start Temp 50F, 0.35A 120VAC 50/60HZ