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Our 4200K lamps have been tuned to offer a superior spectrum of light for vegetative growth, with sufficient blue light to promote tight internodal spacing during the vegetative cycle. Although these lamps have been optimized for lush vegetative growth.


Eye protection is recommended for working under any grow light, but especially CMH lamps as they are known to produce UV light that is harmful to growers. Please consider UV when selecting attire for working under CMH lamps.


Double Ended 945W 4200k Ceramic Metal Halide Bulb Specifications:


Correlated Color Temperature (CCT): 4200K

Color Rendering Index (CRI): 97

Bulb Life Decay: 10%≥@10,000 Hours 

PPF: 1700 μmol/s 

Lumens: 100,000

Efficiency(Lumens/W): 105

Cost Effectiveness (PPF/$): 12.592 μmol/s per dollar

Base Designation: K12*30s

Bulb Designation: T32




6 Month Warranty

945W DE CMH 4200K Lamp

SKU: CS-945-DEL42

  • This bulb is compatible with standard DE reflectors. You may upgrade your current bulb to CMH without purchasing a new DE reflector if desired.


    Ideal for those who already have a compatible 1000W ballast, such as a low frequency square wave (LFSW) ballast and want require more intense CMH lighting options. Do not attempt to power this lamp at a setting greater than 1000W. Our compatible 1000W LFSW ballast will be available in the not so distant future.


    Although this bulb can be powered by many high frequency (HF) sine wave ballasts, it is NOT compatible with all high frequency ballasts! As we cannot guarantee compatibility with high frequency ballasts, we do NOT recommend this bulb for growers without a LFSW or other CMH compatible ballast. If you are not sure about compatibility, please contact us before purchasing.


    Some growers have reported catastrophic bulb failure with incompatible ballasts including bulb popping! If you absolutely insist on running a 945W lamp on a high frequency ballast, please do not do so without installing a glass lamp shield, and understand that you do so against our safety suggestions.



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