Welcome to the forum!
If the screen frame is still there just go to Menards, buy some screen spline, a roll of screen and replace it yourself.
If you need to buy the frame there is a guy on here who works for a Jayco dealer IIRC.
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.