8 feet of 3" abs pipe
2 'y' fittings
2 45 degree elbows
3 3" caps
1 3" plywood plug
i used wood screws to hold it together so i can take it apart if i need to clean it.
also the plug is a snug fit made out of plywood so if there is a clog in the pipe i can remove it.
this is where the food is put it. cut the hole with a holesaw, then widened it with a sawsall and roofing tar to seal it.
this is the 1st tier, used a sawsall to cut the top of the pipe
this is the bottom tier, same setup