Shelving surprise, for me, anyway..... Had a tenant leave behind 6 boxes of brand new oak flooring. Thought I might be able to use it for train display shelving. Opened up a box today and discovered that the underside has two grooves in it 1 3/8 inches apart (to outer edge) which allows an O scale truck to fit perfectly. Maybe this is old news, but it sure saves me a bundle of $$$. A little stain or paint and I think it will work out.