NOT COMPATIBLE WITH ORIGINAL ENCLOSURES. Do you want to give your pet even more room to run, jump and climb? The Meridian Length Extension Kit, for 4’x2’x2’ Meridian reptile enclosures, lets you expand your vivarium and make it a custom larger space your pet will love. With the length kit, you can combine two enclosures to expand your setup to 8' or longer. You can keep on connecting until you have the length you want! Two 4’x2’x2’ Meridian enclosures = one 8’x2’x2’ Meridian enclosure You can keep on connecting until you have the length you want! Read more