I have a smaller 6 gallon Ridgid, model number WD06700. I bought a YUEFENG VF5000 replacement filter for Ridgid Shop Vac 6-20 gallon wet and dry vacuums; 2 for $22.99. I also bought Gudotra 15 pack VF3503 replacement dust bags for the 5-9 gallon WD5000 WD5500 WD0970 WD0975 WD0670 wet and dry washer: 15 bags each for $24.99 (what an offer at less than $2 a bag). As long as the filter and bags are suitable for our needs (some drywall dust, sawdust, etc.).