Revere dual arm operator

We carry a few different operators that may match this. In order to confirm the best one, can you detach the long straight arm from the track and show me what the end looks like? 

I recognize this. You have an older style Ashland operator which I don't believe is still available. Take a look at the 39-253LB Encore operator instead. This is the one I would recommend as a replacement. It operates similarly to the one you now have, but you may also need a new 39-529 slider and maybe even a new 39-528 track if you can't reuse the originals. You'll also need the 39-451 handle/cover, which is sold separately.