Housing, 37mm, 2Pc, 50/Box Back Catalog number: GCO37050-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0916-01-R Inlet Filter Replacement Kit for GilAir Plus with Price on request 811-9931-01 Cyclone, FSP-10 Large Capacity Cyclone (10LPM Res Price on request 811-1004-02 PM-10 Impactor Kit, Replacement for Models 810-100 Price on request