The company you are looking for is Tuflex Manufacturing. They make all and any fiberglass lawn care product you can imagine. Try 800-327-9005 call me back if thats not the right #, thats from memory. They have all sizes 20 bag 30 bag 50 bag. Only speak to Tom Sayward.
Let me know how you make out.
Please tell tom you got his name from Matthew at Highest Quality Lawn Care in New hampshire as we buy from them often and are buying new sprayers from him as we speak.
LOL, I actually the chance to use it this weekend since the wife happened to put the camera down after she ran the battery out. Once its charged I'll get you a pic and actually on email, not hand delivered as before, lol