View online Installation and service manual for LiftMaster MEGA ARM / MEGA ARM TOWER Garage Door Opener or simply click Download button to examine the LiftMaster MEGA ARM / MEGA ARM TOWER guidelines offline on your desktop or laptop computer.. We have the following LiftMaster MEGA ARM / MEGA ARM TOWER manuals available for free PDF download. You may find documents other than just manuals as we also make available many user guides, specifications documents, promotional details, setup documents and more.
LiftMaster warrants the MEGA ARM-UL to be free of defects in workmanship and materials for a period of 2 years for electronics and mechanical components and includes a 10 year corrosion perforation warranty on the cover and chassis.. Interlock with memory- allows Mega Arm to open a slide/swing gate first then raises arm. Break away mounting design for the 12 -15 foot by 3 "tubular aluminum boom arm.