The MEGA B4 is a 4‑bar LED grow light from HortiBloom, released in October 2018. It uses 672 Osram Duris S5 3030 diodes (optional Samsung LM301 configuration) and draws about 620 W. The fixture outputs 1,680 μmol/s at up to 2.7 μmol/J, with a core coverage of 4×4 ft and total coverage up to 5×5 ft. Dimensions are 90 × 90 × 15 cm and weight is 21 kg. The passive‑cooled design with UL drivers is fanless and supports adjustable viewing angle to fine‑tune spread. Intended as a 1000 W HID/HPS replacement, the B4 suits enclosed tents and rooms where even canopy PPFD and quiet operation are priorities. Input voltage is AC 100–270 V, and the package includes hanging kits and a 6 ft power cord.
