FLSUN T1 PRO MUFFLER

Edit: New T1 Pro ship with the fan in a different location. If you converted T1-U to T1 Pro this will work or on very early T1 Pro. For new T1 Pro use the pre sliced version. Once you print the sweeper fan duct you will hear the fan intake more than anything so I recommend this to keep it quiet. It has 4 pins that fit inside the vent of the T1 Pro and keep it secure. I was surprised when it brought the fan noise down to the same if not lower than my A1 printer.