CG3:Level 1: luxurious open plush tunnel w/ padded faux fleece accents on the window and headrests at each end. Level 2&3: generously sized (14.5" inside diameter) lookout nests typically with a berber carpet on the outside & with fleece padded cutouts. Two genuine sisal rope climbing/scratch posts (30" and 47").
Tunnel: 16"  long.
Base: 24" square.
Overall height about 53".
(Suitable for larger breeds.)

MZ3: Level 1: luxurious 21" curved perch. Level 2: open rectangular 13"x15" bed w/ 2.5" sides ( interior measurements). Level 3: open rectangular 14"x19" bed w/ 2.5" sides (interior measurements).

Two genuine sisal rope climbing/scratch posts (30" and 47"). Shorter post is carpeted on lower half.Base: 24" square x 2.5" thick.
Overall height about 56".
(Suitable for larger breeds.