Housing, 37mm 3pc Opaque, 50/Box Back Catalog number: GH37 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0905-01-R Inlet Filters, Replacement for GilAir Plus, Pack o Price on request 910-0906-EU-R GilAir-Plus STP 5-Pump Starter Kit, Euro cord Price on request 800270-2 Gilibrator-2, High Flow Kit, 230V, Euro Cord Price on request