AgroMax BIAX F55T5 Pure PAR is a 55-watt compact T5 (PLL) fluorescent grow bulb engineered for plant growth. It uses a 2G11 four‑pin base and measures 20.7 inches in nominal length. The bulb produces approximately 5,000 lumens and features a “purple” output tuned to chlorophyll absorption bands, concentrating light in the blue (about 420–470 nm) and red (about 620–670 nm) ranges. Designed for use in AgroMax PLL 55-watt BIAX fixtures, it is compatible with fixtures such as Tek Two and Tek Four. Rated life is listed at 20,000 hours. This lamp is intended for horticultural use where focused photosynthetically active output is preferred; the coverage footprint depends on the specific fixture and reflector used rather than the bulb alone.