In original packaging item, may require some assembly. See link for more details:

Size: 18" 

Note: Shows signs of heavy use and and Should be cleaned but has been inflated for an hour and stays firm. See in house photos for details. 

https://www.target.com/p/intex-18-34-pillow-top-air-mattress-with-electric-pump-and-headboard-queen-size/-/A-83221902#lnk=sametab