Osram 400 Watt High Pressure Sodium Bulb

HPS Lamp is a bright single-spectrum lamp with a comparatively long
life for use in the flowering stage. Heavy fruiting is assured with
this excellent lamp.
Osram a highly trusted and reliable brand
HPS lamp produces only orange/red light for heavy flowering
56,500 lumens output
High lumen output per watt
Designed for longer life