Hollow soffit F trims are used as a starter or edging trim and are placed upside down with the slot facing the house.
It is recommended to check it is level every 3 feet by placing a level across the gap that lies between the fascia board and siding to ensure it is accurate.
Freefoam's hollow soffit F trim is 5-metres in length and is coated in a smooth storm grey (RAL 7045).