- Opening width and height
- Door area and span influence section construction, reinforcement, track layout, spring sizing, material handling, and the documented configurations available for the project.
- Insulation and finish
- Thermal construction, interior backing, panel profile, exterior colour, decorative elements, and corrosion-resistant finishes determine the selected door sections and related hardware.
- Removal and site access
- Old door construction, damaged components, interior storage, vehicle access, finished surfaces, and the route for full-width sections shape labour and handling plans.