45W High Power T5 E27 PF>0.92 4U tube CFL energy saving lamp in high bay light
USD $1.5 - $2.5 /Piece
Min.Order:3000 Pieces
Hubei Derun Lighting Appliance Co., Ltd.
Middle Ring is useful to descrease the temperature of ballast, and make the lamp life longer. The color of plastic middle ring is custermized.
Tri-phosphor powder inside the tubes supply 60lm/watt, but halogen powder has just 30lm/watt. Higher lumen per watt, more energy saver.