DC100-12V

TerraBloom’s DC100-12V is a 4-inch inline duct fan designed to run on 12V DC only. It delivers up to 141 CFM of airflow (about 240 m³/h) while drawing 21 watts, using a brushless DC motor and dual jet–type impeller for efficient performance. The fan includes a built-in PWM driver for speed control via the +/−/PWM lead wires; speed can also be reduced by lowering input voltage (PWM controller and power supply are not included). Its aluminum housing is compact at 6.25 × 7.25 × 5.9 inches, and installation hardware is supplied. Intended for ventilation and exhaust in small spaces such as grow tents, gardens, crawl spaces, and attics, it fits standard 4-inch (100 mm) ducting for straightforward integration.