Yes. The basin waste (slotted or unslotted) connects to a bottle trap or P-trap below, which provides the water seal to prevent odours and connects the basin to the main waste pipe. You can purchase one from us, here.
I love this so stylish and much cleaner I would highly recommend worth the price.
I love my new stone bath mat I’ve just had my bathroom redesigned and it matches so well
Works very well. Water disappears after a few hours. No staining. Dropped toothpaste on it which did leave a mark but can use the sandpaper to remove it.

