The IRV(V=vertical) & IRH(H=horizontal) models are our standard wire wound, metal clad resistors. The ULV and ULH models are UL approved versions of the IRV and IRH. These models have an extruded aluminum housing providing rugged and strong protection. Options include flying leads or tab terminals, inductive or non-inductive windings. The most common applications for these models are motor drives, braking and snubber applications and power sources for industrial equipment.