Reduce your maintenance costs Low mercury - only 4.4 mg per lamps.;24 month Warranty Period.;TCLP Compliant*;* Fluorescent lamps that are TCLP Compliant reduce the amount of pollutants released into the environment. Philips PLUS T8 High Output 8-foot fluorescent lamps reduce the impact on the environment by offering long life and low mercury. Extends the relamping cycle which reduces maintenance and disposal costs.;PLUS T8 HO 8-foot has the longest rated average life in the industry.;30,000 hours rated average life?;More light over life with 95% lumen maintenance than a MH 400/U at 67% lumen maintenance.;Available in 8 foot length 86 watts with 3000, 3500 & 4100 Color Temperatures.;? Average life under engineering data with lamps turned off and restarted once every 12 operating hours. Ideal for industrial applications requiring longer life.