Broken Wheel on patio screen door

Broken coaster Wheel on screen for patio door. I am not the original owner of the house that was built in 1984. Pictures show the Wheel in the bottom of the screen door as well a picture of just the part.
All windows in the house are original and are the Anderson Windows brand so I belive this to be Anderson as well.
I looked on their website and couldn't find a part that looked like this.

Thanks for your help