Housing, 37mm 2pc Opaque, 50/Box Back Catalog number: GH37-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 400518 Pump Carrier, Soft, LFS-113 Price on request 810-0203-02 GilAir-3 Programmable (ATEX), Pump only Price on request 375-0009-01 Carrying Case for Nephelometer Price on request