The Grower’s Choice 315w CMH/LEC Lamps are suitable for use in all standard 315w CMH/LEC fixtures. Grower’s Choice 315w CMH/LEC Lamps use a proprietary phosphor coating on the outside of the arc tube to provide you with the richest spectrum on the market.

Grower's Choice 4200K 315 Watt SE CMH Bulb Features

• For use in any 315w CMH/LEC fixture
• Produces more PAR per watt than standard Metal Halide
• Richest spectrum on the market CRI of 97 makes this lamp the closest solution to sunlight available
• Promotes extremely tight internodal spacing, leading to more flowering sites and a fuller canopy
• Offers significant improvement in spectral quality over standard Metal Halide

Specifications

• Spectrum: 4200K - great for veg, but works for bloom also
• Lumens Per Watt: 110
• CRI: 98
• Lumens At 100 Hours: 33000
• Photon Flux: 540 umol/s
• Lifespan: 15,000 hours

See the full spec sheet here.