<p><b> 8 Pack "Please Do Not Disturb Sign Welcome Please Knock Sign" fits all door knobs and door handles. Grabs people’s attention and gets the point across. Black side says "Please Do Not Disturb" and Blue side says "Welcome Please Knock", which are nice use in session, home offices/classrooms, clinics, law firm, hotel or during any kind of private like therapy, meditation, massage, spa treatment ect.</b> </p><ul><li>Number of Items: 8</li><li>Size: 4x9 Inches </li><li>Material: Heavy duty PVC plastic, waterproof, durable and long-lasting use. </li><li>Easy to Use: These Do Not Disturb Door Knob Hanger Sign works perfect for all door knobs to use.</li><li>Warranty and Service: Worry-free 1 years warranty, and 7 days 24 hours online customer service.</li></ul>