<http://schema.org/telephone>
"1-800-277-3458"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.discountfilterstore.com/culligan-filters.html?media_primary_filter=String-Wound+Polypropylene&mode=list&price=-10&size_advertised=10+x+2-1%2F2>