THOR MAX 400W by LEAF5 is a greenhouse-focused, IP65-rated LED grow light designed as a low-footprint replacement for legacy HPS/CMH fixtures. The 400 W variant delivers a rated PPF of 1040 μmol/s with system efficacy of about 2.6 μmol/J at 220 V. According to the LEAF5 datasheet, a single unit covers approximately 1.2 × 1.2 m (4 × 4 ft) at 45 cm above canopy, with average PPFD around 476 μmol/m²/s. The fixture measures 34 × 26 × 7.9 cm and weighs about 4.9 kg; the driver is mounted externally for improved heat management. Optics use glass lenses over each LED, and dimming/control is via 0–10 V with compatibility to the brand’s HydraOS system. Designed for vegetative and flowering in greenhouse environments.