About 3/4 of a box of 3x6in matte white subway tile from American Olean. The full box would cover about 12sqft, so I'd conservatively estimate about 8 sqft here - enough to make a contrast band or a sort of scatter-mix blend of sheens/colors for a bit of visual interest. Comes with an assortment of ~15 edge pieces (with a rounded edge on at least one side) for a nice finish in spots where the tile doesn't extend to a corner.