Purchase and Shipping - I bought the unit online and it arrived 3 days later. The unit arrived via UPS Ground. The outside of the box was undamaged, but upon opening I found the molded styrofoam packing was largely destroyed. The motor and the rest of the system was lying in the bottom of the box. Surprisingly, after inspection, there was not a scratch on the unit, so we're good there. Foam packaging could be improved.
Assembly and Installation - All the parts needed for assembly was in the box and for me assembly was intuitive. After glancing at the assembly instructions I proceeded to put the DC together and didn't need to look at the assembly instructions again. Pay close attention to installation as the unit has some critical clearance requirements.
Fit and Finish - Excellent. No complaints.
Configuration - I have the unit wall mounted in my garage near the garage door opening. I allowed for 1 ft clearance on the sides. I used the factory French cleat type mount. I have a 4" Y fitting just before the inlet. One 2 1/2" hose to the Miter Saw with a shut off gate at the saw. The other line is 4" and using flex hose to my table saw with Rocklers Quick Disconnect system.
Performance- The unit is 1 HP and has a 10" aluminum impeller. Note: Aluminum is not the most desirable material for DC impellers due to the possibility of a rusty nails striking it and causing a spark. That means that there is a potential for a thermite fire. Think Fourth of July Sparklers. I knew this in advance, so that's on me. I don't have a way to measure the air flow, so the rest is subjective and unscientific. I suppose a digital anemometer is capable of providing you a measurement value, but my experience working for 35 yrs as a Metrology Engineer in a calibration laboratory at a major defense contractor, I've found the lot of them to be untrustworthy, uncalibratable and mostly garbage. The best way to measure air flow is with a pitot system and that is way beyond what we woodworkers need to know. So, I'm forced to go by feel. I used to own the 2 HP (240VAC) Grizzly DC and it was a monster for my small double car garage shop. My only complaint with it was that it was just too large, and was seemingly always in my way - plus it was tethered to the only 240VAC outlet in my garage, so I sold it. So, from that perspective the little wall mount unit is a compromise. At first, after connecting it to my Jet JWTS-10 contractor table saw I was a little underwhelmed. I have the plastic bottom in it and have enclosed the rear of the saw with masonite. I've since sealed the cast iron table to the base of the saw using upholsters foam. It helped a lot.
Summary- I am satisfied so far. The unit is small and is better than a shop vacuum. The Grizz is adequate running on one station at a time and picks up 90% of the dust out of my table saw. I don't like that the unit came with a 30 micron bag. That is way too porous and lets dangerous small dust particles escape through the bag and into the air. My opinion is that It should come with the 3 micron bag, that's optional at Grizzly (P/N H4340). I am currently waiting for the T10877 cannister filter and clear plastic bag to come off back order and will definitely buy once available.