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Item F1. $195 FEMdesigner: Basic version; elastic analysis with solid model mesher.
Item F2. + $595 Upgrade to FEMdesigner: Pro version; adds plastic, thermal, dynamic, contact analyses. If you don't already have item F1 then you must buy that now too.
Item FA1. $195 FEMdesigner for Alibre Basic version; elastic analysis with direct mesher.
Item FA2. + $595 Upgrade to FEMdesigner for Alibre: Pro version; adds plastic, thermal, dynamic, contact analyses. If you don't already have item FA1 then you must buy that now too.