The Sunburst spray is the largest one that was ever made by Fantasia. Any other spray will not work in a slot designed for a Sunburst spray. The only thing you can do right now is to buy a cheap Sunburst with a good spray so you will have one. That is the only alternative at this point.
I don't know exactly what models use which spray. I don't have a list made for that. The smaller the lamp, the more likely it uses a spray used by another lamp. The LoveBug lamp has a spray that is used by at least 6 other lamps.
To date, I have yet to find anyone that can make sprays. The last attempt was a failure. One in which I will not repeat.
Hello kris could you tell me if a #3 spray from a firefly will fit a sunniest 4000?
I still have not yet found a spray for my black sunniest 4000.
Do you know what models use the same size spray and were you ever able to get hold of extra sprays to sell?