UHI-S150DM/A/UVP UHI-S150 Replacement Pool Bulb Lamp Super Bright , Highest Quality Compatible Replacement for less than a Third of the Cost! Specs:: 150 watts G12 (BiPin) Base Type T-6 Bulb Type 	Clear Finish 95 CRI 	14000 Lumens 9000 hrs. 	4200 K 0.787" Bulb Diameter 	2.205" Light Center Len 4.331" Max Overall Len HID bulbs put out around 3-5 times greater output (lumens per watt) than traditional halogen bulbs