Set of 2 Purchased mid-May 2025 Opened but unused Selling because I purchased the wrong size. One opening was torn when opened and has been taped shut. ↓From the manufacturer's website [Features] ● For glow starter fixtures only ● Built-in power supply (LED starter included) ● Brightness equivalent to a 15-watt straight fluorescent lamp ● Wide and bright glass tube with shatterproof film applied all around ● G13 base ● Daylight color ● Single-sided power supply specification ● 5-year LED warranty applicable product [Specifications] ■ Dimensions: Total length...436mm, Outer diameter...28mm ■ Weight: Approx. 93g ■ Rated input voltage: AC100V ■ Frequency: 50Hz/60Hz ■ Rated power consumption: 8.0W ■ Rated input current: 135mA ■ Total luminous flux (lumens): 1120 lm ■ Luminous efficacy: 140.0 lm/W ■ Color rendering index: Ra80 ■ Light color: Daylight ■ Rated life (hours): 40000h ■ Applicable base: G13 ≪Notes≫ ※ For indoor use only (do not use outdoors) ≪Before purchasing≫ ※ Cannot be used with the following fixtures: Fixtures with dimming function (cannot be used even at 100% brightness) Emergency lighting fixtures, indicator lights DC power supply ※ Depending on the type of fixture, it may not be usable due to dimensional, thermal, or other conditions (e.g., fixtures with remote controls). ※ Depending on the structure of the lighting fixture you use, it may cause poor heat dissipation and shorten the lifespan. ※ When used in sealed fixtures, it may not be usable or the lifespan may be shortened depending on the size of the fixture. ≪Usage Precautions≫ ※ Can only be used directly with glow starter fixtures with dedicated fixtures and copper-iron ballasts. If flickering occurs, or if used with rapid starter fixtures, inverter fixtures, or electronic start fixtures, it cannot be used directly. ※ When using with fixtures other than glow starter fixtures, always request installation by a qualified professional such as a construction company or an electrical store. Installation by general individuals is prohibited. ※ Cannot be used with automatic switching devices such as human motion sensors or delayed stop switches. ※ When using in multi-lamp fixtures, all straight LED lamps must be replaced with the same type. ※ Do not use with power sources other than AC 100V, 50/60Hz frequency.