Go-Cal Replacent Filter Back Catalog number: 811-9917-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GH37-2 Housing, 37mm 2pc Opaque, 50/Box Price on request 700393 Aircon Pwr Module- Power Supply 1PCa 5v @ 4.3 Amp Price on request 811-1004-04 PM-4.0 Impactor Kit, Replacement for Models 810-10 Price on request