Inquiry (采购产品): manual slide one direction These will replace a broken overhead door system. We are located in Belize City Belize. We operate an air ambulance aircraft for BERT. I am a volunteer pilot with Wings of Hope based in St Louis. I think manual would be best because of dependability. I am not sure it will be feasible to ship due to cost. But am considering all the options. The opening is 39 ft 2 in x 10 ft 5 in. One problem is the floor is not level or even. **** Hidden Message ***** Jim Mallette Belize City Company: Wings of Hope E-mail: jjmallette1@juno.com **** Hidden Message ***** jjmallette1@juno.com