Go-Cal Replacent Filter Back Catalog number: 811-9917-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF25450 Filter, MCE, 0.45µm, 25mm, TEM 100/Pack Price on request GB25W Band, 25mm Shrink, White, 100/Pack Price on request GH37SR Housing, 37mm 3pc Solvent Res 50/Box Price on request