FEV ITALIA door closers are rigorously projected, realized and tested in Italy, according to tests which guarantee the perfect correspondence to the wanted parameters. Their durability in time is guaranteed from the overcoming of tests that assure their reliability and inalterability of the performances even after 500.000 cycles of opening and closing, finding a superior efficiency to the standards imposed by the norm EN 1154. All floor springs are covered for 3 years warranty on defects of manufacture beginning from the date marked on the body, through the substitution of the defective piece.