Rated 5 out of 5Â by inchworm Stainless Mary's save the day!
Resolved a perplexing issue with a pair of heavy automatic doors and a very uneven warehouse floor using these hinges; when closed, the doors had to be as airtight as possible in order to maintain correct pressure differentials, so we couldn't chop the bottoms off.
Also, seals or brushes couldn't be used as they tucked under and jammed the doors. Installing three pair of these hinges allowed the doors to rise just enough on opening, thus clearing the rough surface.
An added bonus is the lack of resistance when closing, as the fall of the hinges allows gravity to take the load off the motors. And they're stainless! Win-win!
Rated 5 out of 5Â by JohnhomeDIY Rising Hinge
Impressively solid construction, had to exchange for RH hinge, but no problem.