Very few table saw manufacturers offer effective above-the-table dust collection, and blade guards are often awkward. I got this unit for my Powermatic 66. Overall, I made a good choice, however...
The shipping packaging was of poor quality. The cardboard was very soft, and the styrofoam was weak and crumbly, making unpacking very messy. This combination also provided minimal protection during shipping. The package was dropped or crushed during transit, resulting in a dent on the 4 hose connection area. Fortunately, the hose fits over that part of the tube so functionality was not impeded.
Assembly instructions leave much to be desired, with minimal details both in terms of explanations and illustrations. A certain level of experience and knowledge with all things mechanical is required. Adjustments are finicky, with lots of trial and error involved, especially with regard to the height of the dust collection boom and distance of the vertical boom support from the table. Use of the table saw connection bracket is extremely important in order to maintain proper alignment of the blade guard with the blade. Again, minimal instruction is provided on how to assemble and attach, so some improvisation was necessary to adapt to my particular saw.
All that said, the unit functions as I had hoped. Between the above table and built-in cabinet dust collection, virtually no dust escapes during cuts. Ripping narrow stock is a bit problematic, but its easy to lock the guard just above the table if need be.