ADC Compliant|cULus Listed|HARDI Approved|NADCA Standard|NEPA 90A/90B|UL Listed

• Reduced total installation cost - fast, economical installation Material will not support mold or mildew growth Long standard lengths help reduce waste - easily cut to exact lengths or spliced, at the job Easily shaped to fit oval inlets Suitable for all bathroom venting applications All components are self-extinguishing and will not support flame Complies with NFPA Standards 90A and 90B and most local, state and federal standards or codes Maintenance-free under normal conditions highly-resistant to rust and corrosion Strict quality control over all raw materials and completed ducts Will not balloon at recommended operating pressure Suitable for all commercial applications where non-insulated "connector"-rated products are not allowed Will not collapse at recommended operating pressure Assists absorbing system vibration transmitted through ductwork Packaged compactly for efficient transporting, storing and handling

Non-insulated UL181 Class 1 flexible air duct, extremely strong with heavy fiberglass cloth fabric permanently bonded to a corrosion-resistant spring steel wire helix. For all pressure heating and cooling systems. A superior alternative in applications where insulated duct is not required or cannot be used, e.g., clean room applications. Unlike connector-rated products, S-TL is not limited to length of run. THERMAFLEX® S-TL air duct is used in either supply or return sections - for branch ducts and duct connections to or between mixing units induction units, control or terminal units and diffusion devices, including light troffers. THERMAFLEX® S-TL air duct provides economical means for handling misalignment between system components and ducting around obstacles where fabricated and fitted ducts are difficult and costly to install. This duct is equally suitable for new jobs or refit work and is especially useful when making system extensions or changing conditioned zones now or in the future. Compliance with NFPA Standards lets you install lengths longer than the limitation applying to connectors. THERMAFLEX® S-TL air duct offers further economy of installed cost, for example, as a return duct within conditioned spaces or in any zone where the function of insulated duct is not required.