Filter Housing, Rear GilAir-3/GilAir/5 Back Catalog number: 202816-1 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9936-01 Tubing Adapter, 1/4" to 3/8 " ID, Plastic, for Gil Price on request TE-28 Teflon Bag, Septum Valve (50L) Price on request 800573-100 Diagnostic Panel only, Hi/Lo (2-50cc, 20-200cc, 0. Price on request