<http://schema.org/telephone>
"1-800-277-3458"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.discountfilterstore.com/undersink-filters.html?brand=US+Filter&flow_rate_range=2.5+-+5.0&media_primary_filter=Granular+Activated+Carbon&mode=list>