Osram 20667 Dulux bulb base is G24Q-1, which is used for general lighting. It has a color temperature of 4100K and a rated life of 12000 hours. It's a 13 watt double tube compact fluorescent lamp with 4-pin base. This Osram 20667 Dulux s a great buy!

Base	G24Q-1
Bulb Type	Fluorescent Bulbs
Color Rendering Index (CRI)	82
Color Temperature (K)	4100K
Maximum Overall Length (in)	5.2
Rated Life (Hours)	12000
Shape	Double Tube 4-PIN
Wattage (W)	13W