BALLAST BYPASS. These tubes must be installed using the ballast bypass method. Use the instructions provided to remove the ballast from your fixtures and directly wire your new T8 tubes. Fluorescent replacement (T8, T10, T12) will save you both time and money as ballasts inevitably fail over time and will require replacement. Ballasts also consume electrical power and by bypassing them you will save even more on your energy bill. ENERGY SAVING, BRIGHT LIGHTING: Fluorescent replacement (T8, T10, T12) will save you both time and money as ballasts inevitably fail over time and will require replacement. Ballasts also consume electrical power and by bypassing them you will save even more on your energy bill. These lights use only 18W to emit 2200 lumens (equivalent to 40W in fluorescent tubes), making them extra bright and energy efficient. KEEP ORIGINAL TOMBSTONES. This tube installs directly into your fixture’s original shunted sockets (tombstones). You will not need to retrofit your fixture with non-shunted sockets. Single-ended installation will require installation with non-shunted sockets/tombstones. Fast, simple and secure installation under the functionality of your choice, this tube is designed with user experience as the defining motivator. CERTIFICATIONS: This product meets strict requirements to ensure that they are safe and reliable. UL-LISTED to avoid electrical shock and fire hazard. RoHS COMPLIANT (Restriction of Hazardous Substances) and FCC Certified making our T8's extremely safe. 5 YEAR UNLIMITED WARRANTY. This product is covered by the Parmida 5 Year Warranty, and our dedicated in-house Customer Service is always here to provide you with peace of mind. UPC 810360030254 ASIN B077YV5J51 Shape Tubular(T) Voltage 120 Volts (AC) Wattage 18.00 Bulb Base G13 Brand Name Parmida LED Technologies Brightness 2200 Lumen Efficiency 55% Light Type LED Unit Count 20.0 Count Is Electric Yes Item Weight 7.04 ounces Light Color Day Light Manufacturer Parmida LED Technologies Model Number PLED-T8DS18W5K-F(X) Power Source AC Material Type stone Control Method App Bulb Shape Size T8 Controller Type Push Button Number of Items 20 Package Quantity 20 White Brightness 2200 Lumens Color Temperature 5000 Kelvin Light Source Type LED Power Consumption 18 Watts Specification Met RoHS, ul_listed Additional Features Installs directly into fixtures original shunted sockets, no non-shunted tombstones required! Bypass ballast. High efficiency, 18W LED replaces 40W, 2200lm light output, UL-Listed for dual-end OR single-ended power. UL-Listed, International standard shape. Instant On, Shock and Vibration Resistant., UL Listed Indoor Outdoor Usage Indoor Light Source Wattage 18 Watts Color Rendering Index 40 Item Dimensions W x H 48 W x 1.1 H Specific Uses For Product Indoor Lighting Light Source Operating Life 45000 Hours Incandescent Equivalent Wattage 40 Watts Manufacturer Warranty Description 5 years.