Heres a link to the comparison of our filters and Stetzers. – https://greenwavefilters.com/greenwave-filters-versus-stetzerizer-filters/

We typically outperform Stetzer Filters side by side using the Stetzer meter for measurement by about 5 – 15%.

Greenwave filters are grounded and have a 3 prong (grounded) outlet on the bottom so you don’t lose the outlet. 

Greenwave filters are RoHS certified. (no toxic materials or heavy metals in the filter). Stetzers are not. 

Greenwave filters cover a wider range of frequencies. 

Greenwave filters are manufactured by AstrodyneTDI, a US company.\

We hired expert EMI/EMF engineers to design the filters.