It installs easily and works like a dream. They install the same way and have the same dimensions as their counter part model. Garage door opener is an important part of the house. Comparing Chamberlain Vs Liftmaster Jackshaft is not so difficult either. Liftmaster vs Chamberlain: Pros & Cons and Verdict. Wall mount design frees up ceiling space for extra storage, light fixtures, celiling fans and more. The Chamberlain RJO70 Wall Mount Garage Opener The Chamberlain RJO70 Wall Mount Garage Opener features a space-saving, wall-mount design to maximize your garages potential as a versatile living space. 7 offers from $589.00. June 15, 2017 By Tyler Jefferson Leave a Comment. The RJO20 is a step up for the majority of its owners from their previous openers. Description. Chamberlain RJO20 is a wall mount garage door opener that is placed discretely on the wall beside the garage door and therefore enabling you a lot of functional space in the garage and on the ceiling.The wall mount design eliminates vibrations and noise and delivers a silent operation. The ultra-quiet opener is nearly silent; virtually eliminating noise and vibration transfer throughout the house. Smooth, quiet operation virtually eliminates noise and vibration into living spaces. Chamberlain RJO70 Next-GEN WI-FI Garage Door Opener, Black 4.5 out of 5 stars 82. In the picture above you see the Chamberlain RJO70 on the left and the Liftmaster 8500W on the right. Like the Liftmaster jackshaft drive opener above, you only get one remote and no outside keypad but both can be purchased separately. Chamberlain Vs Liftmaster Wall Mount. We have reviewed several of them, know their strengths and advantages. The RJO20 wall-mounted garage door opener fits in tight spaces on either side of the garage door and frees up ceiling space for oversized vehicles or extra storage.