Review on Professional Grade Zoning Round Zone Damper by Tom Roberts

This is a very solid job, very good. They open and close with force, unlike traditional shocks that close and open with a spring. The drive mechanism is much better than the regular Honeywell or equivalent. Just make sure your zoning system is turned on, and remember that you need three wires for each snubber, not two for Honeywell and his peers. do not consume as much power as they do not consume power at the end of their movement like normal dampeners. Adjusting the stops for partial opening or closing is also very positive / easy to adjust.