KING 4000W Quantum is a large-format quantum‑board style LED fixture from King LED Lights intended for full‑cycle cultivation in mid‑to‑large tents. The UL‑series 4000W variant uses four boards populated with 1,240 Samsung LEDs and draws about 447.5 W from the wall, producing roughly 836 µmol/s of photosynthetic flux. The panel measures 550 x 642 x 63 mm and is supplied with a 6 ft power cord, hanging kit, glasses and rope ratchet. Retail listings specify rated service life up to 100,000 hours and a 3‑year service warranty. Designed for broad, even distribution, it is promoted for up to a 5x5 ft vegetative footprint and a 4x4 ft flowering footprint, offering full‑spectrum output suitable from seedlings through bloom in indoor horticulture setups.
