If you are trying to compute for the overall cost of a professional screen door installation in Dover, you need to take into consideration some factors. These factors include the kind of screen door that you will install, the materials needed, the size of the door, the choice of mesh, and the labor cost. It has been estimated that the majority of homeowners spend around $100 to $220 for a professional Dover screen door installation. Hinged or swing screen doors usually cost $90 to $110 to be installed. Retractable screen doors can be installed at around $120 to $150. Sliding screen doors will typically cost you around $100 to $120. If you are planning to get screen door installation in Dover for your garage door, expect to pay around $150 to $180.