Belden makes an entire line of RS-232 cables including multiconductor and paired cable. See part numbers: 9533-9546, 9608-9619, 9925-9950, 9501-9550, 9680-9684, 8102-8125, 8302-8325, and 1419A-1425A. Part number 8723 is also used extensively.
Belden manufactures plenum RS-232 cables. See part numbers 88102-88125, 82723, 88723, and 87723.
Run length of RS-232
The maximum permissible length is a function of several variables including data rate and noise. Although no specific length limit is identified, section six of the RS-232 standard provides recommendations and explanatory notes.