Tjernlund M-49504351 in-Line Fan with Current Sensor Switch Dryer Duct Booster M-4, Metal, 4" Description Versatile and durable this 4" metal in-line exhaust fan features high pressure air handling performance with low noise and extremely low power usage. This fan and control combination can be used to activate this fan as another appliance, fan, or other device receives power. Often used for Duct Booster, Dryer Boosting, Equipment Cooling, Factory Exhaust and many other applications. The Sun court Current Switch is designed to turn 120 VAC devices on when it senses and input current. The Current Switch is UL 94-V0 rated for safety of flammability of plastic materials for parts in devices and appliances. The output switch rating is 120 VAC with a running frequency of 45Hz to 65Hz and its max ambient temperature is 140°F. Features: 4" metal in-line duct booster 200 CFM Includes Current Sensor Switch Made in the U.S.A Product Details: Brand: Tjernlund Electric fan design: Blower Style: M-49504351 Controller Type: Button Control Blade Length: 1692.91 Inches Item Weight: 9.05 Pounds Specification Met: UL Control Method: App Is Discontinued By Manufacturer ‏ : ‎ No Package Dimensions ‏ : ‎ 12.3 x 10.2 x 10.2 inches; 9.05 Pounds Item model number ‏ : ‎ M-49504351 Date First Available ‏ : ‎ December 8, 2012 Manufacturer ‏ : ‎ Tjernlund Best Sellers Rank: #199,024 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #286 in Clothes Dryer Replacement Vents #3,663 in Dryer Replacement Parts #286 in Clothes Dryer Replacement Vents #3,663 in Dryer Replacement Parts Customer Reviews: 4.5 4.5 out of 5 stars 426 ratings