This shows the strips and blocks screwed to an MDF board which makes up my bookshelf unit. It just drops onto the existing shelf behind the upstand. It doesn't look quite so neat now, after I spilt linseed oil all over it. I have decided to varnish the woodwork after oiling, as the plain oiled wood looks lovely but really picks up the dirt. I have just ordered some "Tonkinois" varnish for the job.