WF840 is an 840 W, 8‑bar LED grow light from ParfactWorks designed for 6' x 6' flowering (7' x 7' veg) coverage. The fixture delivers a listed 2345 µmol/s PPF at up to 2.8 µmol/J, using 2,176 top-bin Samsung diodes plus 660 nm Epistar reds. Its full-spectrum array combines 3000K and 5000K white with 660 nm red, 730 nm infrared, and 395 nm ultraviolet. The WF840 features IP65 ingress protection, built‑in UL-certified Infinex drivers, manual dimming and RJ11 controller compatibility, and foldable construction for easier handling. Dimensions are 42 x 42 x 1.77 in and weight is 32.8 lb. Input voltage is auto‑sensing 90–305 V. Rated lifetime is over 100,000 hours. Recommended hanging height is 18–36 inches above canopy.
