DimLux Daylight CMH 315W 4K Agro is a singleāended ceramic metal halide bulb for DimLux Expert CMH fixtures and other 315 W CMH housings using a PGZ18 base. The 4K Agro variant delivers a blueāleaning full spectrum and is rated at 1.9 µmol/W efficiency. DimLux lists a service life of 30,000 hours and output around 38,700 lumens. Colour temperature is specified at approximately 4100 K. On the Expert Series 315W fixture, DimLux states an illumination surface of 0.42–1.0 m² at 315 W. The lamp body measures about Ø28 × 188 mm. Use only with an appropriate 315 W CMH/CDM electronic ballast and follow standard HID handling precautions such as installing with a clean cloth and allowing proper warmāup.