The Energy Efficient Turbo Tube Silent Fan Series Vents-US TT Silent Fan Series Offers The Following Benefits: The TURBO TUBE SILENT Inline Mixed Flow Fans provide excellent airflow even in high pressure systems. The specifically designed and optimized case and the new aerodynamic mixed flow impeller ensures the highest performance. Compact size for limited spacesQuiet Operation: 0.6 – 2.5 SonesHigh Performance: Up to 317 CFMEnergy Efficient: 22 – 64 WDuct Size Compatibility: 4”, 5”, 6”Compatible with high pressure systemDouble-speed capacitor motor with thermal overload protectionLong-life ball bearing (up to 40 000 hours)Built-in 2-Speed control & power cord includedRotary and Removable central body for easy installation & maintenanceLightweight, durable and UV resistant plastic caseVibration and corrosion free Innovative Design AERODYNAMIC CASE: The motor and improved case shape provide high aerodynamic characteristics.NEWLY DESIGNED IMPELLER: A specifically designed impeller provides smooth movement and powerful airflow.EASY TO INSTALL & CLEAN: The Removable Body, including motor, impeller and junction box, is the Ultimate Solution for Easy Installation & cleaning.EASY CONNECTION: The Removable Body with the junction box can be rotated for Mounting and Wiring.BUILT-IN SPEED CONTROL: The Double-speed Motor is controlled with a Built-in Speed Switch.INTEGRATED MOUNTING BRACKET: The fan case is Equipped with a Mounting Plate to attach the fan to the wall or ceiling. TT Silent 100 TT Silent 125 TT Silent 150 Add to Cart Add to Cart Add to Cart Customer Reviews 5.0 out of 5 stars 3 3.5 out of 5 stars 3 — Price $134.49$134.49 $144.00$144.00 $215.40$215.40 Currently in Stock ✓ ✓ ✓ Max CFM 146 200 327 Duct Diameter 4" 5" 6" Sones 2.5 2.5 3.5 Wattage Use 30 37 66