Item 70203 DRTPBWB- This product comes in two formats, Donaldson air cleaner #1 with a rounded top and a small profile on the bottom, this air cleaner comes with with or with out bands. Donaldson air cleaner #2 has a flat top and a flat bottom and comes with or without bands. This air cleaner measures 49.00 mm tall and is 26.00 mm in diameter. All measurements are +/- 1.00 mm approximately.