NATGAI Ceiling Spring Vibration Isolator Hangers for A/C Air Handler Bedroom Theater Studio, Anti Vibration, 110 Lb Capacity, 1.20" Deflection(4 Pack)

Works great! Easy to install.

These are affordable, but I'd say they're rated for weight very high. They're more rigid that I expected. I'd probably not buy them again and try to find something that cumulatively would hold 50-100 lbs.

These work very well for hanging a dehumidifier in a basement. Really cuts down on noise and vibration. Would buy again.

Was pleased to learn these fit 3/8 bolts as well so I could use them with unistrut hardware to mount an air handler. Vibration transfer is unnoticeable.

These really do a great job at nearly eliminating annoying vibration. I have a ceiling mounted dehumidifier in my basement and the vibration from the first floor was very annoying. These effectively eliminated the vibration. One thing to note, is that the bolts seems to be 5/16". So if you are mounting these on a rail with standard 3/8" hangers, you'll need to purchase additional 3/8" x 3 1/2" or 4" long bolts to mount these. The bolts come right out and the holes in the rubber isolation parts are wide enough to except the 3/8" bolts no problem. Not a big deal, but it would have been nice if these had standard bolts with them.

Did not work as intended