What is the length of the SN-UL-AK20L Outdoor antenna? EnGenius Admin Updated October 04, 2017 22:57 Follow The entire length of the antenna including the mounting pipe below the antenna is 34 inches. Related articles Can I change the frequency of my DurafonPRO system? Optional SN-UL-AK20L Outdoor Antenna Installation Instructions Multiple Base Setup in a DuraFon PRO Telecom System What to do when a Motorola RDU2080 can’t communicate with Durafon UHF? How to Extend Phone Coverage Outdoors Comments 0 comments Please sign in to leave a comment.