Invacare TDX series and Storm Series power wheelchairs with 20”-24” width configurations with Formula CG Recline seating system (i.e. Tilt/Recline, Tilt/Recline/Elevate, or Recline only) and a conventional style backModels:TDX Series: TDXSP, TDXSP-AUS, TDX SR-AUS & TDX SRStorm Series: 3GTQ-MCG, STORM TORQUE, STORM TORQUE-AUS, RANGERX, 3GRX-CG, ARROW 3G & 3GAR-TSMultiple serial numbersManufactured from October 1, 2006 - July 31, 2014ARTG number: 160385