Invisible Sun’s ISH265 Pro is a UK‑made single‑panel LED horticultural fixture introduced in 2018. It uses Samsung LM301B diodes and was offered in 3000K or 3500K white options. The Pro draws about 270 W and is intended for full‑cycle use in compact areas, with recommended flowering footprints of 2 ft x 4 ft or 3 ft x 3 ft. The linear heatsink assembly measures roughly 700 x 300 x 40 mm. Later V2/V5 revisions kept similar form factors and coverage while updating diode mixes and efficiency.
