Duplex printing is not in the listed specifications for this printer on AMZ. See the “compare this printer” section on this page:https://www.amazon.com/HP-Laserjet-Wireless-Printer-B4A22A/dp/B00S74JAHK/ref=sr_1_1?ie=UTF8&qid=1488380322&sr=8-1&keywords=LaserJet+PRO+M252DW+Printer This conflicts with a mention in the Woot listing’s spec page that indicates duplex “automatic” is a feature. Woot staff, please clarify.
I see now on the AMZ page indicated above that duplex printing is shown both as included and excluded, and where it is shown as excluded, the max paper size is indicated as only 5.5" x 8.5", which certainly is false. This listing error on the AMZ page makes me think the indication that duplex printing is absent may also be false. Clarification from Woot will be helpful. Thanks.
Best place to go is the HP site. It says Auto-duplexing.