ThinkGrow’s UV‑1 is a 4‑foot supplemental LED bar engineered to swap into Model‑H or Model‑W fixtures to add ultraviolet during late flower. Each bar draws about 73 W total, with roughly 10 W of UV output alongside full‑spectrum diodes. The bar is intended to replace regular bars on the host fixture and is typically used for the last four weeks of flowering. Two bars are recommended to cover a 4x4–5x5 ft area. The UV‑1 is rated L90 > 54,000 hours and features a slim, sealed housing suited to commercial cultivation. Dimensions are approximately 45.24 x 2.06 x 2.5 inches and weight is about 1.70 kg per bar. It is plug‑and‑play with the fixture’s existing connections for quick installation.