Features and specifications:
1) Full spiral design delicate and compact size
2) Compare with U-shaped lamp in same watt, its length shortened by one-third
3) High luminous flux and lifespan up to 8,000 hours
4) Tricolor powder makes the glass tube light brighter and softer
5) Self ballast design
6) Base: E27, E26, B22, E14, E12
7) Dimensions:
a) EFL-S, 55W: Φ83 x 220mm
b) EFL-S, 20W, 23W, 26W: Φ60 x 150mm
c) EFL-S, 9W: Φ47 x 100mm
d) EFL-S, 11W: Φ47 x 107mm
e) EFL-S, 13W: Φ47 x 113mm

Outer packing:
EFL-S 55W: 50pcs/ctn
Dimensions: 445 x 445 x 425mm
EFL-S 20W, 23W, 26W: 50pcs/ctn
Dimensions: 635 x 330 x 190mm
EFL-S 7W, 9W, 11W, 13W: 50pcs/ctn
Dimensions: 500 x 260 x 145mm