LED Replacement for Fluorescent Tubes:SHOPLED T8 led bulbs utilize high-performance LED chips to deliver brilliant lighting at 4680 lumens. Replacements for T8 T10 T12 fluorescent bulbs (equivalent to 96-watt fluorescent tubes), These 36 watt led 4ft light bulbs provide an immediate 65% savings on your electric bill when replacing old fluorescent tubes. High Brightness,Wider Beam Angle：SHOPLED 4ft led bulbs feature a built-in triple-row LED chip and an innovative D-shape optical design. Engineered for high-bay applications, they provide a 300-degree beam angle that delivers broader coverage and brighter illumination. Ideal for both general lighting in industrial settings (plant floors, warehouses) and accent lighting in commercial spaces (display areas, showrooms). Easy Installation: The led tube lights 4ft features a double-ended connection for easy, direct replacement and upgrade—without having to replace the fixture or sockets. Simply connect one end to the live (L) wire and the other to the neutral (N) wire. This makes upgrading your lighting a quick process that takes just minutes. Plug & Play or Ballast Bypass:SHOPLED 4ft led ballast bypass bulbs Type A+B LED light bulbs can be installed with a ballast( Plug & Play) or without a ballast (BALLAST BYPASS), making LED conversion fast, simple and secure. Check ballast list for compatibility.(Note: Our 4 foot t8 led bulbs don't compatible with dimming ballast, please do not use it with our lights.) What you get: 4' led light bulbs with an ultra-long lifespan of 50,000+ hours .These 4ft led lights can last 20+ years depending on use ,say goodbye to frequent bulb replacements. Plus, professional lighting engineers guide you every step of the way.Please let us know directly if you meet any issue. SHOPLED 4 Pack T8 LED Bulbs 4 Foot, 36W 4680LM 5000K Daylight White, Type B 4FT LED Bulbs, Fluorescent Tubes Replacement, D-Shaped, Ballast Bypass