<http://schema.org/telephone>
"1-800-277-3458"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.discountfilterstore.com/water-filters.html?dir=desc&order=position&size_advertised=8-3%2F8+x+2-1%2F4&size_fitting=1%2F4>