Garage Door Manual Lock Repair: reading the quote

Often, yes. The cylinder in a T-handle is a small pin-tumbler lock, and if it shares a keyway with your house locks it can be pinned to the same combination. Where the keyways differ, a compatible cylinder can usually be fitted to the handle so the match is possible. Bring a house key to the visit and the technician will tell you on the spot.

Access along the door edges

Shelving, bikes or storage against the vertical tracks and door edges slow the work at the guides and slots. Clearing a metre either side beforehand shortens the visit.

Door thickness and insulation

Insulated and thicker doors take longer spindles, longer through-bolts and sometimes a sleeve through the foam. Matching those parts to the door affects the parts list.

Slide bolt or keyed handle

An inside slide bolt is a simple piece of hardware with one moving part. A keyed T-handle has a cylinder, spindle, centre body, springs and two bars, and its repair takes more time and more parts.