The garage door seal comes in both a Standard (15mm High) and Industrial (25mm High) height.
Garage door standard manufactured sizes are 2440mm for a Single Garage & 4880mm for a Double Garage.
However, extra length is included on each strip as a precautionary measure against garages that are not standard in size.
Single Garage Seal Strip is 2.6m
Double Garage Seal Strip is 5.2m
Oversize Garage Seal Strip is 6.2m etc.