world class Flexible ducting for mine and tunnel ventilation. Minevent High pressure ventilation ducting for positive airflow. TwinDuct Oval chambered ducting for positive pressure ventilation. Designed to maximize headroom in drift/tunnel by 25%. MineDuct Round spiral wire reinforced ventilation ducting for positive and negative airflow. Accessories Smooth radius Elbows, Laterals, Wyes, Tees, adapters and transition accessories available. FeaturesDiameters: 12” - 120” (300 - 3050mm) depending on product.Standard section lengths range from 25' - 1000' (7.5 - 300m) depending on product.Products available for positive and negative pressure airflow.Hi-Strength product construction.Industry leading continuous inline suspension seam.Available with a selection of hooks and accessories for horizontal and vertical installations.Flame Resistant and Anti-Static (FRAS) FlexLine meets a variety of international standards including Canada, South Africa and Australia.FlexLine™ is offered with Zipper, QuickSnap, Grommet as well as ring to ring connections with Multi-Clips.