HortiBloom LED’s LUMA P4 is a 4‑COB fixture designed for 4x4 ft core coverage with extended reach to 5x5 ft. Released in 2017, it runs four selectable COBs (Citizen CLU048‑1212 or Cree CXA/CXB 3070/3590) behind glass optic lenses and draws about 320 W at full power. The fixture outputs a rated 736 µmol/s at 2.3 µmol/J and is driven by UL‑listed power supplies. A veg/bloom switch allows using 4000 K for vegetative growth and 3000 K for flowering. The square housing measures 46 x 46 x 8.5 cm and weighs around 7 kg, with quiet active cooling and a daisy‑chain link for up to four units. Lens options (90° or 160°) enable tailoring intensity and spread for canopy depth and footprint.
