- Section construction
- Single-skin, insulated, and composite-core sections differ in weight and structure. The chosen profile and thickness affect the door package and counterbalance requirements.
- Site exposure
- An open setting, building height, nearby shielding, wall position, and other design inputs can affect the wind criteria supplied for a particular garage opening.
- Headroom and ceiling obstructions
- Low ceilings, beams, ducts, lighting, heaters, storage racks, and sloped roofs can change the lift arrangement, rear supports, and installation access.