Yield Lab 6 Inch 440 CFM Charcoal Filter and Duct Fan Combo Kit HIGH PERFORMANCE FAN: If you are looking for a powerful yet compact fan, look no further! Boasting an optimum 440 CFM and 2700 RPM, you can insure proper circulation. With a balanced motor and lubricated ball bearings keep this fan will continuously run as long as you need it. Not to mention a solid metal construction and powder coat housing, this blower is built to last! QUALITY FILTER: Built with carbon charcoal and cotton pad design, this filter is perfect for your stale air needs! Enjoy a maintenance free design that requires no additional tedious work. With a life expectancy of 1.5 years, you can expect this item to last. So toss out your old gels, sprays or incense and pick up the Yield Lab 6 Charcoal Filter. PRE FILTER INCLUDED: As an added bonus, enjoy a free built in pre-filter to get optimal air purification! WIDE VARIETY OF APPLICATIONS: If you do not have a grow tent, do not fret as this system can be applied to many situations. These can include but are not limited to; Greenhouses, kitchens, bathrooms, grow rooms, and many other HVAC set ups. So if you have air filtration issue that needs to be fixed, this kit is for you! INCLUDED COMPONENTS: 1x Yield Lab 6 Inch Purifier Activated Charcoal Filter, 1x Yield Lab 6 Inch 440 CFM Air Duct Fan Vent System.