Adjustable Computer PC Vent Fan 3-12V Speed Controller for Chicken Coop 240mm
BIG AIRFLOW 93CFMX2: The AC powered 240mm fan with full speed 3000rpm around 93cfmx2 (while others are 2500rpm 85cfmx2) for those who need high power fans. LONG LASTING DUAL BALL: High speed 240mm brushless ventilation fans with dual ball bearing provide longer lifespan up to 6000 -100000 hours (over 6years).