Check the listing for details. Ring Video Doorbell Wired 5AT3T5 Custom spacer Mounting bracket 0.5"-3.5". Condition: New. Listed at 10.99 USD. Ring Video Doorbell Wired Model 5AT3T5 Custom spacer Mounting bracket Expander 0.5"-3.5". 3D Printed. Expander Ring Video Doorbell NOT Included. Hardware to mount the doorbell to the spacer is included. To mount the spacer to the wall, use the doorbell hardware. Doorbell size will add 5/8" to the whole assembly. if your side obstacle is 2.75" then you need 2.25" spacer to clear the view. See pictures Customizable length straight spacer from 1/2 up to 3.5 inches depth. NOTE THESE ARE NOT STACKABLE Compatible with Ring Doorbell Wired Only Can be used on any side of the door They are 3D printed out of a material known as PETG for durability and resistance. UV Resistant Package Content:1 x Mounting Spacer. 2 X Hardware to mount the doorbell to the spacer (Doorbell not included)