B-Line Eaton series pipe clamps and accessories, " height, 10.56" length, 1.5" width, Steel, Offset pipe clamp, Electro-plated zinc

The B3148-4 ZN is sized for 4 inch pipe. It is a one-size clamp, not adjustable across a range, so a 4 inch nominal run is what it is built to hold. For other pipe sizes you need the corresponding size in the B3148 series rather than this part number.

An offset clamp stands the pipe away from the mounting surface rather than holding it tight against it. That gives you clearance for insulation, for another run behind the pipe, or for a structural face you cannot drill directly under. The B3148-4 ZN is the offset style in steel, so if you want the pipe sitting flush to the wall or strut you want a standard riser or pipe clamp instead.

It is steel with an electro-plated zinc finish, which is the standard indoor and protected-location finish. Zinc plating handles normal humidity in mechanical rooms and interior chases, but it is not a hot-dip galvanized or stainless part, so for direct weather exposure, wash-down, or corrosive process areas pick a galvanized or stainless clamp instead.

The B3148-4 ZN is supplied as the clamp itself. Fasteners for attaching it to strut, concrete, or steel are ordered separately and depend on your substrate, so plan on the appropriate channel nuts and bolts or concrete anchors as a separate line on the order.

Order Eaton B-Line B3148-4 ZN. The B3148 is the offset clamp series, the -4 is the 4 inch pipe size, and ZN is the electro-plated zinc finish. There is a single configuration under that number, so no further options need specifying.

It weighs 3.7 lb and measures 10.56 inches in the dimension B-Line lists as height, with a 1.5 inch width. That weight matters when you are sizing anchors or stacking multiple supports on one strut run, since the clamp itself adds nearly four pounds per support before the pipe and contents.