:: T8 LED lamp operates A/C Direct (Ballast override)NO PARTIAL PACKS (8FT.):: Voltage: 90 140V AC input (4 ft. tubes):: Rated for use in open fixtures only. Not for use in enclosed fixtures:: UL-listed: DLC-rated except T8-8FT-40W-50K:: 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:: Ambient Operating Temperature: 14ºF to 80ºF:: Dimmable (4 Ft. only):: 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.:: 40 Support Clips & Screws included in a master carton of 20 pieces.