Filter, Replacement, GilAir-3/GilAir-5/BDX II Back Catalog number: 201050 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended GFPC0237 Filter, 37mm, 0.2µm, Polycarbonate, Plain White, 1 Price on request 810-0903-01-R STP Pump Only (No Dock) Price on request 811-9917-04 Go-Cal Carrying Case, Soft Price on request