Housing, 37mm, 2Pc, 50/Box Back Catalog number: GCO37050-2 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800413 Kit-Damper-Diaphragm Low Flow Price on request 201320-40 Valve, Replacement, GilAir-3/5, BDX-2 Price on request 910-1305-EU Gilian 800i,5-Pack Kit, EU Cord Price on request