315W T15 CMH Grow Lamp, Mogul Base E39, Full Spectrum, 4000K

The Growlite 315W T15 Mogul Base Full Spectrum Ceramic Metal Halide (CMH) Lamp is engineered to deliver high-quality, sun-like spectral output in a compact, reduced-jacket design. Designed for horticultural applications, this lamp provides balanced full-spectrum lighting that supports both vegetative growth and flowering stages in indoor and greenhouse environments. The T15 design features a smaller bulb profile compared to traditional CMH lamps, allowing installation in more compact fixtures while maintaining strong light output. This reduced-jacket construction is open-fixture rated, making it ideal for use in systems where space constraints or airflow considerations are critical. Operating at 315 watts, the lamp delivers approximately 500 umol/s of photosynthetic photon flux (PPF) and up to 34,000 lumens after initial operation, providing efficient light output and effective canopy penetration. The 4000K color temperature and high CRI (~95) produce a broad, natural spectrum that closely mimics sunlight for improved plant quality and development. The lamp utilizes a mogul base (E39/EX39) for compatibility with standard HID fixtures and operates on ANSI C182/O ballasts at a nominal 100V and 3.15A. Universal burn position capability allows flexible installation across various fixture orientations, and the lamp is rated for both open and enclosed fixtures. Designed for durability and long service life, the lamp is rated for approximately 20,000 hours of operation and is typically recommended for replacement after 12 months in continuous horticultural use. A fast hot restart time of approximately 5 minutes ensures minimal downtime in controlled environment applications. Optimized for performance in Growlite systems such as the OG-315, the 315W T15 CMH lamp provides a compact, high-efficiency lighting solution for growers seeking improved spectrum quality, reduced fixture constraints, and reliable long-term operation in controlled environment agriculture.