AmazonBasics 36 inch folding metal dog crate with single door. Purchased ~2.5 months ago and still in box - opened, assembled, and tried out once but virtually never used. Very easy to assemble (frame pops up/collapses so you don't have to take it apart each time you're finished using it). Nothing wrong with it, we just moved into a new place and don't need it anymore.

More info: https://www.amazon.com/gp/product/B00QAVO29I/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

Purchased for $33.50. Asking $25 OBO. Pickup in EV