Flexible Ducts

This category features commercial and light industrial-grade flexible ducts engineered to provide adaptable, low-friction air routing connections in complex facility layouts. Designed to bridge the gaps between rigid main trunk lines, mixing boxes, and terminal diffusers, these technical ducts are ideal for navigating tight structural framing, sharp offsets, and restricted interstitial ceiling spaces. The inventory includes heavily insulated flexible ducts featuring high-density fiberglass blankets jacketed in metallic polyester vapor barriers (FSK) to prevent thermal loss and eliminate condensation, alongside uninsulated configurations for dedicated exhaust and material handling loops. Built around a spring-steel wire helix mechanically locked into a rugged multi-layer laminate core, these ducts provide excellent structural integrity, resist crushing or kinking, and offer acoustic dampening properties to minimize air velocity noise. This professional lineup provides mechanical contractors, sheet metal installers, and facility engineers with code-compliant, UL 181 Class 1 listed air ducts designed to accelerate installation times, maintain required air changes per hour (ACH), and optimize airflow efficiency.