What kind of "big" whole house filter (DSL) are you talking about?
Google is our friend: Very similar to what I have: SPSH70SR1 http://www.hometech.com/techwire/dsl.html#CC-SPSH70SR1 Other types go inside the Telco box: (Certain sizes): http://www.onqlegrand.com/jahia/Jahia/lang/en/pid/956 These you have to be very carefull to get the proper one. Rick Glazier
