The Famurs TF4000 is a fanless, dimmable LED grow light aimed at mid‑to‑large indoor gardens. Retail listings specify approximately 420 W actual power draw. The large board design measures about 42.8 x 14.2 x 2.8 inches and is promoted for broad footprints: around 6 x 4 ft for vegetative growth and about 6 x 3.5 ft in flower. Its full‑spectrum recipe combines 3000K and 5000K white channels with 660 nm deep red and 730 nm infrared to support the entire plant cycle. A built‑in dimmer (0–100%) enables straightforward intensity control, and typical packages include hanging hardware and accessories. Sellers differ on the exact Samsung LM301 variant named, but consistently present the TF4000 as a passively cooled, low‑noise fixture for tents and small rooms.
