Omlet - Omlet's large walk in rabbit runs can make a really excellent predator proof, spacious rabbit enclosure. We use the Omlet runs here at Camp Nibble. (The Omlet Eglu rabbit housing alone is not a suitable size for a rabbit's home.)
"Rabbits love to run, hop and jump, so it's important that you provide your pets with enough space to play in every day. This Outdoor Rabbit Run is just the thing. Unlike other metal rabbit runs, this has been designed to blend into the garden, so it won't be an eyesore and it will keep your rabbits safe from predators and other pets.
This secure rabbit enclosure is extendable in width, length and height, making it suitable for every breed of rabbit, from Dwarf Lops to Lionheads to Flemish Giants."
Omlet also sell the Zippi Rabbit Tunnel System.