I'm installing a whole house water filter Home Hardware » Product Details »
that requires being mounted horizontally to a 1/2"PEX cold water line (located just after the meter).
If this was a rigid copper pipe it would be sufficiently rigid to hold the filter aloft, but with 1/2" PEX I'm thinking it will sag considerably. I can't use standard wall anchors as the filter requires about 3" of clearance from the wall.
What is the best means of attaching it?.