http://www.charlottegaragedoorguys.com/2009/10/garage-doors/ Garage Door Service, Repairs and Installations Call 704-785-9555 Sat, 03 Apr 2010 15:06:41 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.charlottegaragedoorguys.com/2009/10/garage-doors/comment-page-1/#comment-12 Info about Garage Doors « Garage Doors Mon, 02 Nov 2009 16:35:44 +0000 http://charlottegaragedoorguys.com/?p=84#comment-12 [...] The power unit attaches to a track. A trolley connected to an arm that attaches to the top of the garage door slides back and forth on the track, thus opening and closing the garage door. The trolley is guided along [...] [...] The power unit attaches to a track. A trolley connected to an arm that attaches to the top of the garage door slides back and forth on the track, thus opening and closing the garage door. The trolley is guided along [...]

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