The Platinum 315W CMH E40 3100K bulb.

Suitable for use in all standard 315W LEC fixtures. It is the first LEC bulb with an E40 bulb holder base so it can be used in traditional reflectors without the need to change the socket or use an adapter.

The 3100K is a bulb containing precision gases for improved spectral output. It generates much less heat than a conventional sodium or halide bulb and closely approximates sunlight by increasing the red range. Growers will notice shorter intermodal spacing and better yields on flowering plants. 

The 4200K is a bulb that contains precision gases for improved spectral output. It generates much less heat than a conventional sodium or halide bulb and closely approximates sunlight by increasing the red range. Growers will detect shorter intermodal spacing and better yields on flowering plants.