Allia fine fireclay sinks are crafted in the Limoges Region of France;The luminous glaze of each sink is fused with the clay to provide an exceptionally strong chip-resistant surface;Acid and alkali stain resistant;Can be installed as an undermount or drop-in. For undermount installation order optional QN25UM undermount Kit available;Due to ±2% dimensions, it is recommended that the cabinet maker wait until your sink is delivered to make the cabinet;21" minimum cabinet size;Center-rear drain placement prevents dishes from covering the drain;Standard 3 1/2" diameter drain opening;Basket strainer sold separately;For matching wire sink grid, order WSG5927