Note: Basically attach one wall to one half of rear wall using the aluminum channel and #8 screws - mount both pieces on base unit and secure both halves of the back wall with a 10" wide melamine shelf forming a center spine. Attach wire shelving unit to center spine to form ladder - all sizing is estimated, please measure everything before you cut. In the case of the wire shelving, it comes from home depot with a lip. Use a jigsaw and fine metal cutting blade to trim the lip away leaving a flat wire "ladder" for climbing. The white nylon anchors will secure the climbing ladder to the center spine and allow your Iguana access to all shelves within the unit.

Note: The walls sit on the base unit inside the lip of the base. They are secured to the base using the aluminum channel provided - this anchors them well after they have been caulked. Make sure your walls are cut to provide a ¾-1" gap between the wall and the front lip of the base - this leaves room for the ¾" boards that make up the front of the unit.