Back decades ago, a 10um filter was often used as a BP filter in many applications. Due to the orifice restriction, the flow rate was very low through those filters and so the capture ratio (beta) was "better" than a normal FF filter.
My 1987 Escort 2.0L diesel (Mazda engine IIRC) had two filters mounted on one base mount; they sat opposite of each other. Both were FF filters rated about the same beta, but one had an orifice and was the "bypass" filter. (Wix 51324 and 51839)