Tube Holder Triple Variable Flow, only Back Catalog number: 800074 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200157 U-Tube replacement for P/N 800143 Price on request 200524 Tube Holder Tubing, 3/16" ID x 1/16" W (10 ft) Price on request 800165 Sorbent tube adapter nipple for Dual manifold High Price on request