Invisible Sun’s ISH320 is a 320 W class LED grow light built around four ISH150R boards on a 3 mm anodised aluminium heatsink. It uses 600 Samsung LM301H white diodes plus 36 Samsung LH351H deep‑red emitters, driven by a Mean Well power supply with onboard dimmer for easy control. Designed for a 1 m × 1 m flowering footprint, the fixture measures 600 × 600 × 40 mm and draws approximately 327 W at full power. Rated at about 2.6 µmol/J, the spectrum supports full‑cycle cultivation. The ISH320 was offered in Type R and Type BR configurations, with both suitable for veg and bloom; Type R adds enhanced red to stimulate the Emerson effect. Designed and manufactured in the United Kingdom.
