Regenerative Blower Silencers Outside Diameter 2.6 in Connection Style Screw On Inlet Size 1 1/2 in Inlet Type NPT Inlet Gender Female Outlet Size 1 in Outlet Type NPT Outlet Gender Female Maximum Air Flow 155 cfm Compatible Manufacturer Part Number VFC400A-7W VFC400P-5T VFC500A-7W VFC508P-2T VFD4 VFD41 VFD41S VFD42 VFD42S Number of Air Inlets 1 Number of Air Outlets 1 Noise Reduction Rating 5 dB Maximum Operating Temperature 225 Degrees F