Can be cut to the exact length. Non-Conductive and Conductive types available. Clear PVC formulation rated to 16in Hgvacuum non-conductive type and 22in Hg conductive type. Bubble every 36in (91cm) can be cut to form integral tapered or funnel connectors. Conductive type meets N.F.P.A. specifications for use with flammable agents. Dispensed in single roll case.