MN-W4500 is a bar‑style LED grow light from Niello’s MN‑W series intended for full‑cycle indoor cultivation. The MN‑W line uses Samsung LM301 white diodes with supplemental 660 nm deep‑red and 740 nm far‑red, driven by Mean Well power supplies, and is built as passively cooled light bars with an external, waterproof driver (no fan, low noise). Per Niello’s series overview, the spectrum combines 3000 K and 5000 K whites with red/IR, and the efficiency is positioned around 2.8 µmol/J. Power is 450 W by model naming convention. Brand materials and buyer feedback on Niello’s site indicate effective use over a roughly 4×4 ft canopy in tent grows within the MN‑W family.
