Go-Cal Dampening Module Back Catalog number: 811-9917-05 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended C-DFR Dual Flow Regulator Accessory, for ACTI-VOC and ACTI-VOC PLUS Price on request 375-0008-01 Protective Rubber Boot for Nephelometer Price on request 800093-3 Inlet Filter Replacement Kit, LFS-113 (Packg of 3) Price on request