L-QB4 is the largest panel in Niello LED’s L-QB sunlike full‑spectrum quantum‑board series for indoor cultivation. Based on the series specification table, this variant draws about 390 W and is sized 61×46×6 cm. Niello specifies bloom coverage of roughly 150×150 cm at 35 cm hanging height and vegetative coverage up to about 180×180 cm at 45 cm. The L‑QB series uses passively cooled boards with glue‑coated LEDs (IP65) and a spectrum including 3500 K and 6500 K white plus 660 nm red with IR, targeting seed‑to‑harvest use. Rated lifetime is 50,000 hours. Niello’s storefront currently lists L‑QB1 and L‑QB2; the L‑QB4 variant is documented in the same series table but is not presented on its own page. No brand‑confirmed L‑QB4 hero image was available.
