Housing, 37mm 3pc Opaque, 50/Box Back Catalog number: GH37 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 375-0008-01 Protective Rubber Boot for Nephelometer Price on request 910-1505-NO Gilian 10i, 5-Pack Kit, No Cord Price on request 800272-2 Gilibrator-2, Low Flow Kit, 230V, Euro Cord Price on request