Brand new in box. Purchased 4/12/2021 and went to install later in May only to find out it is not advised to use with the system we have. So it has only been opened to install, but promptly removed, not used. Of course it is too late to return, I let it sit over a year. Purchased for $270.61 (receipt on page 7). Selling for $200 firm, will accept cash or Zelle. Pick up North Paloma Creek, Aubrey Texas (380/North Paloma Creek). No holds, cross posted to other sites. Smoke free home.