Specific versus blanket
A specific or purchase-money filing covers one identified asset — the truck that was financed, the machine that was bought. Everything else stays free.
A blanket filing covers all business assets: equipment, inventory, receivables, the lot. It is standard on many advances and working capital facilities, and it is far broader than most people realise they agreed to.
The practical difference shows when you next apply for funding. A blanket filing in first position can stop another funder lending at all, because there is nothing left to secure against.
What it does and does not do
It does not affect your personal credit and it is not a default. Filings are made at the start of a healthy funding relationship, not at the end of a bad one.
It does give the funder a claim to those assets if you default, and priority over later filers.
It is public. Anyone — including other funders, and including people who cold-call businesses that have just taken funding — can search it. That is how some of the less pleasant calls after a funding round find you.
Managing them
Search your own business before applying. Old filings from settled facilities frequently sit there for years because nobody asked for termination.
When you repay a facility, ask in writing for a UCC-3 termination. It is routine and it is very often not done unless you chase it.
Before signing, ask exactly what will be filed. Negotiating a specific filing instead of a blanket one is sometimes possible and is worth asking for.
If you have a blanket filing and need more funding, tell the new funder up front. They will find it, and finding it themselves is worse.