Hello Al and thank you for your interest in Moen Banbury 5-4/25 in. L x 3 in. H x 22-3/4 in. W Wall-Mount Clear Glass Shelf in Brushed Nickel model Y2690BN. The glass is 1.9” thick. If you have additional questions, please feel free to call us at 800-289-6636. Our business hours are 9:00 am – 5:30 pm Monday through Fridays EST.
Hello cm and thank you for your interest in Moen products. The Moen Banbury 22.75 inch W Glass Shelf in Brushed Nickel measures 20 inches on center. If you have additional questions, please feel free to call us at 1-800-289-6636. Our Product Specialists are available Monday through Friday from 8:00 am - 7:00 pm Eastern Time.
The shelf is 5" deep.
Support brackets are 20" apart.
It shouldn't be a problem to install by following instructions. If problem persists, I suggest removing the mounting plate and check how the assembly goes together. Sometimes packaging or manufacturing is faulty. Also, you should be screwing down the set screw until it gets tight. Even if it goes beyond flush.
The Moen Banbury 22.75 in. W Glass Shelf in Brushed Nickel measures 20" on center between the wall posts.
It comes with instructions AND a full sized, paper, diagram/template.