I am looking for a heavy duty manual wheelchair for donation any suggestions?

i am a large tall man who has cerebal palsey i am looking for a 20 inch or 22 inch wide seat i dont need footrests but they will be handy to have i am wanting to travel in cars busses and trains and with the powered wheelchair i have i cant travel very well with it other than local city bus dial a ride things like that if you can help me i would appreciate it