MDF not wood! 
In multiple places in the listing it says these slats are made of wood, yet what I received was MDF with a thin paper glued to the surface. 
The negative reviewers before me complained they had to stain the slats - and I don't know if maybe they did receive actual wood product - or if they know nothing about woodworking - because staining MDF and paper (not even a wood veneer!) makes zero sense. See pics attached - stacks of so called "walnut" slats - but clearly just MDF