4 Inch Inline Duct Fan Steel Duct Booster For Home Room Indoor For Exhaust And Intake Ventilation， 220V<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Made of good quality steel material</li><li>It's more sturdy and durable</li><li>Strong，high efficient and long service lifespan</li><li>Environment-friendly and lightweight</li><li>Silent fan blade operation design with low noise and work decibel is under 60dB</li></ul></div><img src="http://ecx.images-amazon.com/images/I/410RrxCVGwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41ZV55yrxKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zLEifaEgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41-ac%2BpTQsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41O3YeqimqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41oLwnDpkIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4167rwPG8NL.jpg" noproxy>