Adjust-A-wings 315w CMH kit complete with 4200k lamp .This is the latest offering from the Adjust-a-wing stable of high performance horticultural lighting .The 315w ballast is a specialised high frequency 150khz unit required for remote ballast mounting .The 150khz ballast allows for effortless ignition of both the 3k and 4200k lamp in remote application.Both lamp and ballast have been frequency tuned for harmonic synergy .This increases reliability and maximises lumen maintenance over the life of the unit.The lamp is of japanese origin with a 4200k colour temperature which gives this lamp a cri of 94.8 .The kit also comes with a custom designed small defender shade making it great for under lighting ,small grow enclosures and filling in gaps in your existing lighting regime .