B-Line Eaton series clevis hanger, 7.75" height, 4" diameter, Steel, Light-duty clevis hanger, Type 1, Plain, 4" pipe size, 5/8-11" rod size

The B3108-4PLN is sized for 4 inch pipe, with a 4 inch inside diameter at the strap. It is a single-size hanger, so use it on 4 inch pipe only, not as an adjustable-range hanger. For other pipe runs you need the matching size in the B3108 series.

Plain finish means bare, uncoated steel. That is fine for dry interior mechanical rooms and concealed spaces, but it will rust in damp, outdoor or corrosive locations. For those, specify a galvanized or epoxy-coated version of the same B3108 hanger instead of the plain one.

Yes. The stated application for this Eaton B-Line clevis hanger is insulated pipe used for slides, guides and rollers. Remember the 4 inch strap diameter is the clamping dimension, so on insulated lines the hanger must be sized to whatever it actually closes around, either the bare 4 inch pipe with the insulation shielded, or a 4 inch outside dimension over the insulation.

The B3108-4PLN measures 7.75 inches in height, so allow that much clear space between the pipe and your attachment point, plus rod length and nut. In tight plenums that dimension is often what decides whether a clevis works or whether you go to a lower-profile clamp.

A clevis like the B3108-4PLN is the choice for larger pipe on single-rod suspension: the two-piece strap lets you set the pipe in place and adjust height at the 5/8-11 rod, and it suits insulated lines with a shield or roller. Split-rings and ring hangers are for smaller diameter branch piping and don't give you the same adjustment or load path at 4 inches.

It is the light-duty steel clevis hanger, Type 1, in the Eaton B-Line B3108 series. Type 1 is the standard clevis classification for general pipe support. Each unit weighs 2.346 lb, which matters when you are adding up dead load on a long run.