Master 4 Veg

Master 4 Veg is a 4‑bar LED canopy fixture from Grand Master LEDs designed for vegetative growth in 4 x 4 ft spaces. It uses 1,368 Samsung LM301H diodes driven by an Inventronics driver, with onboard knob dimming and RJ14 control‑port compatibility. The fixture delivers up to 490 W draw (120–277 V), a measured total PPF around 1247 µmol/s and an efficacy of 2.53 µmol/J. The spectrum is centered at 5000 K for vigorous veg development. Housing is IP66 rated and ETL/DLC listed. Physical size is 1114 x 1114 x 103 mm, with a net weight of about 11.5 kg including the driver. Recommended hanging height is 12–40 inches above canopy, and the unit carries a 5‑year warranty.