120mm x 4 480mm Adjustable PC Cooling Fans with AC Plug & 3-12V Speed Controller - Perfect for Computer Case, Chicken Coop, Server Rack, Mining Rig, Cabinet & Window Ventilation - Quiet Exhaust Cooling Solution for Home & Office Use

480mm Adjustable Computer PC Vent Fans with AC Plug 3-12V Speed Controller for Chicken Coop Rack Space Window Wall Cabinet Server Mining Rig Exhaust Cooling

STEPLESS CONTROLLER Small 120mmx4 computer fans with speed controller,wide range of speed choice,you can easily adjust the speed from silent(1000rpm) to high speed(3000rpm) according to different applications.

BIG AIRFLOW 93CFMX2 The AC powered 480mm 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 480mm brushless ventilation fan with dual ball bearing provide longer lifespan up to 6000 -100000 hours (over 6years).

FLEXIBLE ARRANGEMENT Each set fans with screws,fan connection brackets,metal guards,cable ties,you can easily assemble it for flexible length and width.

WIDE APPLICATION With AC plug stepless speed controller,the fans can be used for router,amplifier,cabinet,green house,fish tank,dog kennels,plant sheds ventilation and other diy cooling projects.