Designed in 1960 by the N&W as the H-11 class which is an enlarged PRR H-39 70 ton hopper. In 1964, the size was increased to 12' 3" high, cubic feet increased to 3433 and weight capacity increased to 90-100 tons. Over 130,000 have been built. Three distinctive characteristics highlight this class of hopper: roping eye with integral end buffers; end slope sheets are at a steeper angle than the hopper sheets; 13 riveted side posts with the middle two panels wider than the rest. Other features include; Wine door locks and full height side ladder stiles. Pullman, Greenville Steel Car, and Trinity built similar cars. The cars were built by PRR, B&O, C&O, N&W and RDG. Bethlehem Steel and ACF supplied prefabricated kits to other railroads. The following used these hoppers: B&O, Blue Diamond Mining, BN, C&I, C&O, Conrail, Chessie System (B&O), Chessie System (C&O), Chessie System (WM), Chessie System (CSXT), Chessie  System (CSX), Dayton Power & Light, D&H, D&RGW, Island Creek Coal, Intsel Corp, ITEL, LEF & C, L&N, LRWN, MKT, Missouri Public Service, MSDR, N&W, NP, NS, P&LE, P&S, Potomic Electric Power Co, Penn Central, Penna Power & Light, PRR, PVAL, Reading, Rock Island, Santa Fe, Seaboard, SLSF (Frisco), Soo Line, Southern Pacific, TWRY, UMP, UMPX, Union Pacific, Upper Marion And Plymouth and Western Maryland.

Features:

• Ready To Run
• Roller bearing trucks
• Metal 36" wheels
• Interior & slope sheet braces
• Knuckle couplers