Today on our 2011 Mercury Mariner, we'll be installing the Rain-X Latitude Windshield Wiper Blades, Part Number RX5079277. Now, the 2011 Mercury Mariner will take two 20 inch beam style blades. The contoured beam style frame applies uniform pressure along the entire length of the blade, which will create a streak-free wipe and ensure even wear along the blade. The heavy-duty graphite coated rubber… see more >