Brussels Sprout- How high do they grow?

Hi Everyone, I am planning to grow a couple of 'Brest F1' Brussels Sprout in one of my raised beds, but I am having concerns that I will have sufficient growing room, as I have Enviromesh, supported by a wooden framework, around all my RB's. The height clearance is about 30" from soil to mesh. Is this enough, or will I need to have a re-think. Thanks

sound  sprouts will be ok,afterall you can always nip the shoot out when it gets to required height

Look on the packet, it should say the eventual height, though in my experience they often grow higher!

Thanks to Ady & Welshonion, I will trim if they get too high. They are Johnsons seeds, are there is no growing height listed on the packet.