In Session Do Not Disturb Polka Dots Plastic Door Knob Hanger Sign<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Made of a durable thick plastic</li><li>3.5" (8.9cm) x 9.5" (24cm) in size</li><li>Design shown printed on one side with UV- and water-resistant inks</li><li>Can be used indoor or outdoor</li><li>Hole is universal sized and will work with all standard door knobs</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Is6E7irNL.jpg" noproxy>