A:Answer I’ve gone online and see that Keepow 5321F is supposed to be compatible with SV780. However, my model ends with the letter “N”. I got them but didn’t think of the last digit, or rather, last letter. When the supply arrived, I tried to put in a new refill. I couldn’t get the filter all the way down into the vacuum unit.
I used to be able to get my replacements at Bed, Bath & Beyond. It was a different supply box, which I don’t have anymore. We don’t have B,B, & B anymore either. Last time I checked their website, I couldn’t find it.
I saw them at another Filters place [Crucial?] but they were out of stock.
Lowe’s used to sell them too but last time I was in the store, I couldn’t find them. Lowe’s rep said I might be able to get them online. They’re not big, like the washers, dryers, refrigerators, and a shelf load of vacuums. I don’t know why they can’t stock these small boxes of filters.
I hope you have better luck searching.