On Tue, 20 Mar 2012 22:16:42 -0500, SG wrote:

Ed Pawlowski wrote:


Be sure it is powerful enough for your door if it is a large one. In
general, the bigger the better. Some have extra features such as the
ability to turn on the light and not open the door.


Powerful enough? I was always led to believe that the springs do all
the work when set properly, the opener is just a convenience.

In a perfect world, yes. I suggest you travel your town and lift some
of the doors that have no opener and see if that is true. Especially
some of the double doors.

In theory, a 6 year old girl can lift them with one hand.