- Track and roller specification
- Heavier track, additional brackets, longer roller stems, different hinges, or revised fastener spacing can be part of the assembly needed for the opening.
- Jamb and framing condition
- Sound mounting faces support accurate anchorage. Split lumber, weak blocking, deteriorated material, or unfinished structural changes may require coordinated preparation before door installation.
- Supporting wall material
- Wood framing, masonry, concrete, and steel call for different anchors, tools, embedment details, edge clearances, and installation methods at the jambs.