The only thing you see between the tile and the tile grate on an ACO drain is beautiful electropolished stainless steel.
Before anyone buys a new linear drain - ask for some close up pictures like this one I took a few years back of the drain base - inside. Notice how amazing this drain looks (That's the Electropolishing Effect). That there is an option hair strainer as well!
No shocker ACO is the World Leader in Drainage Products.