Insulated Polyester Flexible Duct

The insulated polyester flexible duct uses a breathable non-woven fabric instead of the standard aluminum foil inner duct. This innovative design retains the excellent insulation performance of glass wool while allowing minimal moisture permeability through the duct wall, helping balance humidity inside and outside the duct, preventing condensation on the inner wall, and further enhancing absorption of mid-to-high frequency noise. The insulated polyester flexible duct is particularly suitable for central air conditioning return air systems, ventilation insulation in high-temperature and high-humidity environments such as indoor swimming pools and greenhouses, and occasions with additional requirements for noise control and air hygiene-making it the ideal duct choice for creating a comfortable and healthy indoor environment.

The breathable nature of the non-woven inner duct effectively prevents condensation and potential mold growth on the inner wall caused by absolute sealing in high-temperature and high-humidity return air conditions, keeping the interior of the duct system dry and hygienic. Its porous fiber surface, combined with the glass wool insulation layer, better absorbs air flow noise-especially in the mid-to-high frequency range. During installation, the flexible non-woven inner duct also fits more closely with special-shaped pipe fittings. This product reflects the design concept upgrade from "simple insulation" to "environmental regulation," balancing temperature control with humidity management and acoustic comfort.

We recommend the insulated polyester flexible duct for any ventilation project focusing on indoor air quality, humidity control, and noise environment-especially return air systems and high-humidity locations. Its dual advantages of "breathable mold resistance" and "enhanced sound absorption" can create a healthier and more comfortable space for residences, commercial facilities, and leisure venues. If you're seeking an intelligent insulated duct that "breathes" for humid or noise-sensitive spaces, this product will bring significant value enhancement. Consult us for special application cases related to humidity management.