Pipe Diameter:

You must enter a valid pipe diameter in millimetres.

Aperture Diameter:

You must enter a valid aperture diameter in millimetres.

Fill depth:

You must enter a valid fill depth in millimetres.

Quantity:
(Number of openings)

You must enter a valid number of openings.

Fillet Height:

You must enter a valid fillet height.

Fillet Width:

You must enter a valid fillet width.