This is what Bike Friday says about the case they sell.

"The lock on the GT F'Lite is TSA approved. Samsonite does not measure the wheels or handles in their measurements.The case dimensions are 29.5" tall x 20" wide x 12" deep. This adds up to 61.5 linear inches, which falls just under the 62 linear inches used by most airlines as their cut-off limit for suitcase dimensions. The suitcase weighs 11.65 lbs. "

They want $229 for just the case.