Source One LLC Standard Treadmill Book Holder Reading Rack (TBH-S) Go to amazon.com Related posts 9 best treadmill keyboard holder for 2022 The 16 best treadmill desk attachment FeatureClear Acrylic Medium SizeTop Hook Depth is approx. 2 1/2 Inch and Bottom Hook Is approx. 1 1/2 InchMedium size is approx. 9 inch tall x 11 inch wide DescriptionStandard Treadmill Book Holder Reading Rack