public InputItem(string productName, string borx, string type, string size, string position, string room, string unitLength = null, string applydirection = null)
{
ProductName = productName;
BorX = borx;
Type = type;
Size = size;
Position = position;
Room = room;
UnitLength = unitLength;
ApplyDirection = applydirection;
SummedUpSize = CalculationService.CalculateSummedUpSize(Size);
Quantity = CalculationService.CalculateInputItemQuantity(this);
}