CREATE TABLE table_5273 ("Order Year" TEXT, "Manufacturer" TEXT, "Model" TEXT, "Fleet  ( Qty. ) " TEXT, "Propulsion" TEXT, "Length  ( ft. ) " FLOAT)

What is the Length (ft.) for a 2008 nfi d40lf?
SELECT "Length (ft.)" FROM table_5273 WHERE "Manufacturer" = 'nfi' AND "Model" = 'd40lf' AND "Order Year" = '2008'
SELECT "Length (ft.)" FROM "table_5273" WHERE "Manufacturer" = 'nfi' AND "Model" = 'd40lf' AND "Order Year" = '2008'