how tall will sweet and jalapeno peppers grow?

That's remiss of them. Have a google and you'll find the answer I'm sure. If you're putting strings up and your chilli or pepper turns out to be a 6" high variety you'll kick yourself 

Also, have you scoured the seed packet for the info? 

 I grew them last year and they were both over 2ft tall

my dad has a trade account with moles, it seems like the catalogue assumes your a farmer and know what your doing. lol. being trade packs they come in plain packets with just name and quantity on.

if they aren't going to grow any higher than say 2- 3 foot could I plant them in front of my tomatoes. as they're being planted in a tunnel there lots of un used space in front of the tomatoes.

thanks for the replies