• Type A + B (Dual UL)• Type A: With Existing Ballast - UL No. E366061• Type B: Ballast Override (AC Direct): Connect One Endor Both Ends (Dual Function) - UL No. E342884::NO PARTIAL PACKS:: Rated for use in open fixtures only. Not for use in enclosed fixtures:: UL-listed: DLC-rated except T8-HL-8FT:: Heat sink: 6063 extruded aluminum with heat dissipation ribs for superior thermal management:: Beam Spread: 120º:: Base: Fits standard T8 or T12 sockets (G13):: Rated Life: 50:000 hrs: 5-year warranty:: Requires no ballast. Existing ballast must be bypassed and ockets wired directly to line voltage.:: Ideal for offices: retail stores: showrooms: and residential plications. Especially suited for areas where accessing the fixture is challenging.