Usually, the term since the purchase until the installation is completed, 4 + 2 months (4 parts, order 2 installation), but if the customer does not have a way to edit the construction can be a 3 + 2 months.
Typically ranging from ordering until installation is completed 4 + 2 (4 order parts, 2 installation), but if the customer can not modify the construction is three + two months it.
Usually the term since the order until the installation is 4+2 month (4 order parts 2 installation), but ถ้าทาง customers have fixed construction. Can be 3+2 months.