Fallen Fortress (Type III)(Beige 417) (Canyon) Fortress although some of them do

although some of them do require 1/2"

and XL Lair formicarium

Foraging Area Décor (as seen in photo)

The Mini Labyrinth formicarium is a 4"x6" (100mmx150mm) formicarium attached magnetically (as well as by a small vinyl tubing insert) to the accompanying foraging area

Three Chamber

Fallen Fortress (Type III)(Beige 417) (Canyon) Fortress although some of them do***Ordering the product on this page? You will receive the exact formicarium in the photos accompanying this product page. This formicarium has already been made and can be modified only with the options for glass type and removable vent lid.*** ***Canyon Foraging Area***(+$15) Features: Medium Large Tunnels and Chambers Nestmate Decor Per Photo Large Water Tower (15 ml capacity) Magnetically Removable Glass Type III Material 4x4x4 Foraging Area 4x4x2