Keep a bound copy for a permanent record. Stop card prevents write-through to other form sets. Consecutively numbered in red. Purchase Order Book, 5-1/2 x 7-7/8 Bottom Punch, Three-Part Carbonless, 50 Forms. 12 lines Form Size (W x H): 5 1/2 in x 7 7/8 in; Forms Per Page: 1; Number of Entry Lines: 12.