LED 4ft T8 Dual Tube Replacement,Ballast Bypass or Direct Replacement with Compatible Ballasts,13 Watts. 1900 Lumens,5000K,120-277,,Medium Bi-Pin Base,50,000 Hrs Life,13T8/LED/48-850/DUAL/BP-DR

LED Hybrid T8 - Type A + Type B. Direct replacement or by-pass, System Performance: Ballast Compatible bare lamp is 12W; Ballast Bypass 13W, Solid state LED lighting, High efficacy, DLC Listed, Do not use with dimmers in by-pass mode. Check the ballast for dimming capability when using with a ballast. NSF Approved, PET coated glass tube, Protection from arcing, Bypass mode works wired as a single ended lamp on non-shunted sockets or as a double ended lamp on either shunted or non-shunted sockets