Housing, 37mm 2pc Opaque, 50/Box Back Catalog number: GH37-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-02 PM-10 Impactor Kit, Replacement for Models 810-100 Price on request 811-9901-01 Gilian Bag Sampling Kit with Jar (Use SC-1 or SC-3 Price on request 201119 Filter inside low flow modules 800518 & 800519 Price on request