Original: The installation should take no longer than half a day, although the contractor may need to return for commissioning purposes.
Simplified: The installation should take no longer than half a day, although the contractor may need to return for commission.
Simplified: The installation should take no longer than half a day, although the contractor may need to return for commissioning purposes.
Simplified: The installation should only take half a day, although the contractor may need to return for commissioning purposes.