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Details: 4, 200° K Color temperature, excellent 97. 5 CRI, 31, 127 Initial lumens. The 4, 200° K has very high 1. 70 PPFD per second light source. Good lumen maintenance and excellent PPF performance throughout lamp life. Unique open-rated lamp construction, including a ceramic arc tube contained in a protective quartz glass shroud with PGZX18 base, reduces radiant heat from the arc tube and makes these lamps Suitable for open-rated fixture use.
Item Condition: New