Note: Photosynthetic Photon Flux Density (PPFD) data is produced by using professional lighting simulation software and third party laboratory photometric files. All PPFD data are measured in µmol/m2/s. The result is showing a 20"x44" calculation grid assuming two fixtures mounted 9" apart in a 2'x4' grow shelf with 85% wall reflectance. Actual measurement may vary depending on actual use conditions, input voltages, and measuring instruments. Professional lighting plans for commercial applications are available upon request.