B-Line Eaton series conduit support fasteners, Conduit and cable, 1" Height, 1" Length, 1" Width, 0.4lbs, Trade size: 9, Conduit size: 4" EMT, 4" Rigi

The BL1490 SS4 is sized for 4 inch conduit, covering both 4 inch EMT and 4 inch rigid, and carries trade size 9. If you are running 4 inch EMT or 4 inch rigid steel conduit, this is the correct size in the series; for smaller runs you need the corresponding smaller trade size in the same B-Line hanger family.

Mounting range runs from a 0.5 inch minimum up to a 4 inch maximum. That range is what decides whether it lands on your structure or strut, so measure the member or the conduit seat you are clamping to before ordering.

Go stainless where the run sees moisture, chemicals, salt air, or regular washdown: pool rooms, wastewater plants, commercial kitchens, exterior coastal work. The BL1490 SS4 is type 304 stainless for exactly that. On a dry interior office or warehouse run, standard plated steel hangers do the same mechanical job at lower cost, so save the stainless for the corrosive locations.

Yes, the BL1490 SS4 conduit hanger is UL/cUL listed, which is what an inspector or an institutional spec writer will want to see on a conduit support in a hospital, school, or government facility. The cUL side means it is accepted for Canadian jobs as well.

Order Eaton B-Line part number BL1490 SS4. That is the single model, the SS4 suffix being the stainless version, sized for 4 inch EMT and 4 inch rigid. There are no finish or length options to specify.

The hanger itself is what is supplied. Fasteners into your structure, whether concrete anchors, strut nuts, or beam clamps, are a separate line item and need to be chosen to suit the substrate you are mounting to. If you are on a corrosive job, match the fastener metal to the hanger and use stainless there too so you don't get galvanic problems at the connection.