Housing, 37mm, Conductive 3pc, 50/Box Back Catalog number: GH37C Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800518 Low Flow Module, Blue, GilAir-3/GilAir-5 Constant Price on request 783-0008-04 Battery Pack, Replacement BDX II, NiMH Price on request 800511 Carrying Case ,Hard-Side (17.5" x 13" x 7"), BDX-I Price on request