These come in 2 standard sizes: 20" and 12". 
All signs come with high-tack, double sided tape on the backside but INSTALLATION GLUE IS REQUIRED! The tape simply holds the sign in place while the glue dries. The glue is the main form of installation. 
 
On the custom order page you can request different sizes, studded signs (for installation on extremely irregular surfaces that the tape cannot be used on), and double-sided bracketed signs (as seen in the last photo)
 
Please note that per Branch direction, we cannot produce the JW.ORG logo in any other color or font unless you have previously received Branch approval.