Growcraft ULTRA 330W is ChilLED Tech’s 330‑watt, three‑bar LED fixture built for a 2 x 4 ft flowering footprint. The Ultra spectrum pairs high‑efficacy Samsung 5000K white diodes with 660 nm deep red for flowering performance. Each fixture carries 4,104 LEDs (3,888 white + 216 deep red) driven by a Mean Well HLG‑320H‑48B with 10–100% dimming and a 90–305 VAC input range. Full‑system efficacy is listed at about 3.15 µmol/J. The passively cooled, low‑profile frame measures roughly 42.5 x 19.5 x 1.375 in and weighs about 17 lb, with recommended hanging heights of 12–24 in. The light is supplied with a push‑lock dimmer, driver extension lead and ratchet hangers, and is commonly specified for 3 x 5 ft vegetative coverage.
