The phrase "a blanket one" is correct and usable in written English.
It is typically used to describe a general or all-encompassing statement, rule, or policy that applies to a wide range of situations without exceptions.
Example: "The company implemented a blanket one-size-fits-all policy for remote work, which did not take individual circumstances into account."
Alternatives: "a general one" or "a sweeping one".
The photograph on page 37 of three students sitting on a ledge — one wrapped in a blanket, one smoking, all three laughing while a policeman stood nervously below — was to me a picture of the smug, arrogant smirk of privilege.
A spokeswoman for Scott Morrison did not respond to detailed questions but appeared to suggest that the threat to return was not a blanket one to all asylum seekers detained offshore.
Henry McDonald (Labour rejects Peter Hain's call for Troubles amnesty, theguardian.com, 12 May) must know, or might have checked with me, that I have never supported an amnesty, let alone a "blanket" one for Troubles-related crimes.
The police were initially wary that the policy was a blanket one, covering every arrest, but the Police Department was mollified when it became clear that there would be a "case-by-case" review, according to a person involved in the negotiations.
"I can remember lying under a blanket one Christmas Day because there was no heat in the house.
"It's great that it's something, but I honestly expected maybe like a blanket," one resident told CBS. "How long is this going to last?
Moreover, the task force recommendations on mammograms are not a blanket, one-size-fits-all prescription for every woman.
"Compounding should not be a blanket, one-size-fits-all solution," said Ms. Fox of the University of Utah.
Officially, the government denies it holds any political prisoners, and its generosity entailed a blanket one-year reduction of sentences for all jailed criminals.
Before I went, I heard different opinions on whether I should go, but I didn't want to have a blanket, one-sided view of the country and people.
"Rather than a law that is a blanket, one-size-fits-all," lawmakers should consider alternative routes or time-of-day restrictions on large truck travel on certain roads, he says.
