Review on 🗑️ Vacmaster VFDB Gallon Dust Pack by Tiger Carpani

I bought these VFDB bags on a whim hoping they would be compatible with my 4 gallon Porter PCX19301-4C cable are that I bought from Costco. I was hoping the pockets would match the original part number 25-1238 for a 2-1/4" fitting. Guess what it is! I've also read elsewhere that they work with a Stanley SL18301-3B 4 gallon vacuum, but can't personally confirm this.