Size -1 in Catalogue Editor

[helioarm]

Hi

I'm starting with Plant3D and I don't understand why some elements have OF is -1 in Catalogue Editor. I have a solid background in AVEVA E3D and wall thickness is very important on it. The difference between SCH40 and SCH80 pipes is just the weight?

Can anyone clarify it to me?

Thanks

[George.Endrulat]

Mouse hover over the dim parameter and it'll let you know with a tooltip what 0 or -1 means, usually 0 means that it's taking a dim from another parameter, -1 means something isn't shown, but you'll have to check.