1.3U energy saving lamp 2.80% electricity saving 3.Diameter:7mm,9mm,12mm 4. ... :E27, E14, B22 5.Lifetime:6000-10000hr 3U energy saving lamp description:1.Tube Diameter:φ7mm,φ9mm,φ12mm, Power:9W,11W ... ) High lumens, good light maintenance5) With PBT plastic which is fire-proofed.6) Application: Marketplaces, houses, hotels, offices, factories etc ...