Prevent unauthorized visitors with double-sided Do Not Disturb signs. Attach them to your doorknob to reduce distractions and maintain your privacy during work, school, or strange laboratory experiments. Choose from five fun Stranger Things styles (sold separately): Hellfire Club, Hawkins National Lab, Demogorgon Hunter, Surfer Boy Pizza, and Upside Down The double-sided sign pops out of its peggable display backer and measures 11.2" x 4" Constructed from lightweight-yet-durable MDF. OFFICIALLY LICENSED. Stranger Things Do Not Disturb signs were designed by Genuine Fred with an official license from Netflix. See the entire Stranger Things collection in Genuine Fred's brand store.