What are the mm dimensions of the Plustek Mobileoffice D28 Corporate?
CREATE TABLE "typical_duplex_scanners" (
  "product" text,
  "dimensions_mm" text,
  "dpi" real,
  "pages_per_minute_color" real,
  "max_page_size" text,
  "interface" text
);
SELECT "dimensions_mm" FROM "typical_duplex_scanners" WHERE "product"='Plustek MobileOffice D28 Corporate';