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|   | Pilot | Summary | 
Measure from top of back support to seat pan. Back support shell height is 9.5" (24.1 cm) with scapular cutouts.
| TPSB2 | Contoured, Non-Folding, Adjustable Height, Rigid Back w/ Pad 11"-13" (27.9 - 33 cm) height range. E2613 verification pending with PDAC.  | $950 contour-int | 
| TPSB3 | Aluminum Canes for Aftermarket Back Support, No Pad   | NCO canes-int |