This item is constructed using only about 5 feet of stitching. Unfortunately, the quality of the sewing in this unit is crude and appears to have used the maximum stitch length (because it's faster!) which means that the seams will be the failure points.
In addition, this filter replaces the original which uses a "two stage" double bag construction and it is a single bag by comparison. When ordering, I assumed that the construction would be the same or similar which is important to protect the motor, but was very disappointed when I observed the poor construction in comparison to the original.
imho, this is completely unreasonable in a simple product constructed with a minimum of material that is sold for $80.