NMFC Class 150 covers freight with a density between 6 and 7 pounds per cubic foot. This class marks the point on the NMFC scale where the bulk-to-weight ratio becomes a significant cost driver — freight here consumes considerably more trailer space per pound than mid-range classes, which is reflected in noticeably higher per-hundredweight rates. Auto sheet metal parts are perhaps the defining Class 150 commodity. Hoods, doors, and fenders are large, relatively thin steel panels that, when boxed for transit, create outsized packaging volumes relative to the metal weight inside. The foam padding, cardboard dividers, and carton structure needed to protect these parts add substantial cube with minimal density benefit. Packaged motorcycles are another prominent Class 150 commodity. A crated motorcycle is dense for a vehicle but light relative to its packaged dimensions — the frame, engine, and wheels sit inside a structure that may measure five to six feet long and three feet wide. The combination of size and regulated shipping requirements (fuel drainage, battery handling) makes motorcycles one of the more operationally demanding shipments at this class level. For shippers, Class 150 rates represent a meaningful cost tier. Reducing packaging bulk where possible — tighter crating for sheet metal, disassembling bookcases before shipment — can shift density upward toward the 7 lbs/cu ft boundary and achieve Class 125 rates.
Auto sheet metal parts are prone to surface damage from contact with other freight — proper foam wrapping and edge protection is mandatory. Motorcycles should be crated with the fuel tank drained and battery disconnected per carrier hazmat requirements. Large refrigerators and generators require two-person lift protocols and should be kept upright.
Stowability: Many Class 150 commodities are awkwardly shaped — sheet metal panels warp or dent if stacked incorrectly, and packaged motorcycles require dedicated floor space. Assembled bookcases and shelving units can be racked or stacked if protected. Large appliances and generators typically occupy standalone floor positions. Overall cube utilization is challenging at this density range.
Auto sheet metal has high replacement value and finish sensitivity; even minor denting or paint scratching can result in a rejected delivery. Motorcycles carry high replacement values and may require specialty carrier approval. Generators contain fuel system components — carriers should be notified if any fuel residue is present, even after draining.
Class 150 covers freight with a density between 6 and 7 pounds per cubic foot. Freight above 7 lbs/cu ft moves to Class 125; freight below 6 lbs/cu ft is Class 175.
Sheet metal components like hoods and doors are large, flat, and thin. Proper protective packaging — foam sheets, edge guards, cardboard cartons — creates substantial outer dimensions relative to the metal weight, placing density calculations in the 6–7 lbs/cu ft range.
Motorcycles shipped via LTL must typically be crated, have the fuel tank emptied to no more than ¼ gallon (carrier policies vary), and have the battery disconnected or removed. The shipment may need to be declared as containing limited quantities of flammable liquids depending on residual fuel levels. Always confirm requirements with the specific carrier before booking.
Assembled bookcases and similar furniture pieces often classify as Class 150 when their density falls in the 6–7 lbs/cu ft range. Flat-pack or unassembled versions of the same items typically pack more densely and may qualify for a lower class. Calculating density before and after assembly is a useful shipping cost optimization step.