I spoke to a REAL person when I called that was polite and knowledgeable of their product. The motor seems to be great quality and it works great! Highly recommend, will buy from them again if I need air compressor parts.
Solberg 3/4" Male NPT Steel Silencer Muffler Quiet Intake For Air Compressor
Solberg 3/4 Inch Male NPT Intake Filter Silencer SLCRT-075
Air compressors sure are handy, but they can also be loud, especially if you're using them in indoor environments. The Solberg SLCRT-075 Silencer is a great accessory for your compressor rig if you use it in your shop or garage. This silencer is installed between your compressor head and your intake filter. Inside the silencer is a fiber filter insert and galvanized steel mesh holding it in place, allowing it to absord noise and reduce the operating decibels of your compressor. This muffler creates minimal pressure drop because it does not rely on internal baffles, tubes, or other restrictive devices. Using this muffler can reduce high frequency noise by up to 30 decibels.
Features:
• 3/4" Male NPT Threads on Each End
• Length x Width: 11.5 x 2.5 Inch
• Fiber Filter Insert Held In Place By Galvanized Steel Mesh
• Can Reduce High Frequency Noise by Up to 30 Decibels
• Solid Steel Construction

