Sarana Tile lists Alexander Pormos as a 10.5" x 12" matte porcelain mosaic. Sarana supplies it with a matte face that holds light rather than throwing it back. On the residential side that covers kitchens, entry foyers and open-plan living areas. Commercially it is specified for retail floors, restaurant dining rooms and hotel lobbies. The nominal size is 10.5" x 12", listed metrically as 30.9x26.74cm. Each sheet covers roughly 0.89 sq ft. It appears in the Sarana Volume 8 catalogue at page 8. It arrives mesh-mounted, so the spacing holds while the sheet is set and it trims down to meet a corner or a niche. Sarana prices it by the sheet.