Low Flow Module, Blue, GilAir-3/GilAir-5 Constant Back Catalog number: 800518 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 910-0801-04 Gilian 5000 5-Pack, UL ATEX 120V/240V , No Cord Price on request 811-0920-01 Replacement Valve Caps (Pack of 2) Price on request