Online filtration calculator to calculate envelope pocket bag (dalamatic) area from the bag length and width values.
Formula:
Area = L x W x 2
Where,L = Length,
W = Width
Example: Length = 2 yard, Width = 1.5 yard
Area = 2.0 x 1.50 x 2 = 6.0
Each bag = 6.0 yd²