GENERAL CHARACTERISTICS | Lamp Type | | Bulb | | Base | GR10Q | Watts | 21 | Rated Avg. Life (hrs) | 3 hours per start | | 12 hours per start | | DIMENSIONS | Norminal Overall Length (inches) (C) | | Norminal Bulb Diameter (inches) (D) | | Face to End of Opposing End (inches)) | Max. (B) | | Min. (B) | | Spectral Power Distribution | | | | PHOTOMETRIC CHARACTERISTICS | Initial Lumens | 1400 | Mean Lumens | 1300 | Color Temperature | 4100 K | Color Rendering Index (CRI) | 82 | ELECTRICAL CHARACTERISTICS | Min. Starting Temperature (C) | | Min. Cathode Resistance Ratio (Rh/Rc) | | Max. Cathode Resistance Ratio (Rh/Rc) | | Max. Current Crest Factor | | Features | | Lamp Mortality | | Lumen Maintenance | | |