Housing, 37mm 2pc Opaque, 50/Box Back Catalog number: GH37-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GFPC0237 Filter, 37mm, 0.2µm, Polycarbonate, Plain White, 100/Pack Price on request 811-0012-01 Gilian 800i/5000/10i/12 Replacement filter, pkg 10 Price on request 811-9930-01 Cyclone, FSP-2 Higgins-Dewell Style Cyclone Price on request