3" PVC cleanout tee. $4 Screw cap. $2 End plugs. $2 Aquarium filter carbon. $5 for 3 pounds. Drilled holes in the end plugs. Scotch Brite pads used as "pre-filter". End plugs fit snugly inside ends of cleanout tee. Will use a small stainless screw to hold end caps in. 4" dryer vent hose fits snuggly over ends of tee. 3 Pounds of carbon is more than enough to fill. Screw cap with get an eye screw for easy hanging. View attachment 132604 Will be easy to refill. Let me know what you think. Thanks.