Impinger Holder, Double, Aluminum, GilAir/HFS Back Catalog number: 200131 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9902-20 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x110mm, with end caps, 20Pack Price on request 800134 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tubing Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request