The H51B class of covered hoppers were built by PC at their Hollidaysburg Car Shops in 1968 as PC 887337-887386. Cars then became CR 887337-887386. Many cars were sold the leasing companies such as AEX and NRLX and can be seen across the country. Cars are rated at 100 tons, 4635 cuft, & are 55ft 6in long.
