GLMF-400

Rayonled’s GLMF-400 is a 400 W, four‑bar LED fixture designed specifically for the vegetative stage. It uses Samsung LM301B diodes and delivers a rated PPF of 1,080 μmol/s at an efficacy of 2.7 μmol/J. The unit provides onboard dimming via a manual knob and supports RJ14 control linking. Construction features include isolated extruded‑aluminum light engines and a removable, remotely mountable driver. The GLMF‑400 is cETL listed, specified with CRI 80, and a life rating of L85 at 50,000 hours. Operating range is −25°C to 50°C with 23%–90% relative humidity. Fixture dimensions are 43 × 47 inches. The VEG spectrum is tuned to encourage tighter internodes, stronger stems, and leafy growth prior to flowering while maintaining even canopy illumination.