Brand new in the box S & P Ventilation System (Premium Choice) Model PC-150, 150 cfm, 6-inch duct with a plug-&-play humidity sensor module Model PCHS Retail price for fan is over $400 plus tax: https://www.amazon.ca/Soler-Palau-PC150-Premium-Ceiling/dp/B00C79K7GY/ref=sr_1_2?keywords=pc150&qid=1572410988&s=hi&sr=1-2 Retail price for humidity sensor module is $60 plus tax: https://www.overstock.com/Home-Garden/Soler-and-Palau-PCHS-Bath-Fan-Humidity-Sensor-from-the-Premium-Choice-Collection-N-A/16904963/product.html ASKING FOR ONLY $250 FOR FAN + SENSOR. THAT IS LESS THAN HALF THE COST! Selling because of wrong size. For details of the ventilation system and humidity sensor module, click: http://www.solerpalaucanada.com/products/pc/pc-ac.html For installation instructions, click the below links: (i) ventilation system: http://www.solerpalaucanada.com/documents/IOM/iom-pc80x-110x-150.pdf and (ii) humidity sensor module: http://www.solerpalaucanada.com/documents/IOM/iom-pchs.pdf