What Causes Wet Air Filters & Why Are They a Cause for Concern?
Amazon.com: Ridgid VF3700 Wet Filter For 4-4.5 Gal Vac : Tools & Home Improvement
Restek Super Clean Ultra-High Capacity Moisture Filter
Original 923705.0470 Damp Filter Air Conditioning Drying Bottle for Kalmar Container Reach Stacker Parts - China 923705.0470 and Damp Filter 923705.0470
Kobalt In-line Moisture Filter in the Air Compressor Accessories department at Lowes.com