2 layers188 × 145.4 mm

The CMS1-4-R is a common Mode Filter made by Eaton in a SMD-4P,9.4x7.2mm package with 4 pins. -40℃~+160℃ 18uH@100kHz 2 3.8A 300V 8.9mΩ SMD-4P,9.4x7.2mm Common Mode Filters ROHS.
41 are in stock at JLCPCB (part C2441391). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

SMD-4P,9.4x7.2mm, with 4 pins.
Eaton publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2441391, with 41 in stock; the sellers' links on this page open their listings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.