I got a good deal on this Harbor Freight DC. I decided to toss the instructions and modify this unit to mount it under my bench to save space in my shop. I also enclosed the space to muffle the noise of the motor, and it does help a lot. I mounted the motor unit on to a freestanding bracket. I figured the floor is always the coolest part of the shop, which would help keep the motor cool. The top filter bag is compressed some under the bench, but it doesn’t seem to affect the performance. I also mounted a blast gate under the chop saw bench with an above bench lever to flip it on and off. Over all Im very happy with it, and maybe someone can glean some info off my post.