ET28 common mode filter. 2+2 pin ET28 vertical base. Parallel distance=19.5mm. Pin pitch=11.0mm. ET28 ferrite core inductor. Base size=29.2mmX21.1mmX34.5mm. ET28 common mode choke. Phenolic material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0