6 METAL COLUMNS, CAPS AND BASES; METAL COLUMN CLAMPS; METAL PENS, STALLS, AND GATES AND METAL PARTS THEREFOR; METAL STALL PARTITIONS; METAL WINDOW FRAMES; METAL ALIGNMEINT DEVICES FOR CATTLE IN STALLS; METAL CURB CLAMPS; METAL DOOR TRACK AND HARDWARE-NAMELY, TRACK COVERS, DOOR STOPS, HANGERS, BRACKETS, END CAPS, LATCHES, STAY ROLLERS AND PULLS; NECK CHAINS AND STRAPS FOR COW STALLS; RUST SHIELDS FOR PARTITIONS; STANCHIONS WITH AND WITHOUT OPERATING DEVICES; PNEUMATIC DOOR OPERATORS; AND PIPELINE CLAMPS