| Spiracoustic Plus duct liner, bonded with a thermosetting resin, is specifically engineered to provide very high acoustical and thermal performance in round air ducts of virtually any size. Based on high density fiber glass board technology, Spiracoustic Plus duct liner has factory-made, evenly spaced kerfs to allow the material to conform to the inside diameter of round air ducts. The airstream surface and transverse edges are protected with JMs factory-applied proprietary black Permacote acrylic coating. Johns Manville provides the finishing touches to Spiracoustic Plus round duct insulation with SuperSeal coating products. These unique acrylic coatings are air-drying versions of the factory-applied airstream coating designed for fabrication and repair use. SuperSeal products help retain all the performance characteristics engineered into Spiracoustic Plus duct liner. |
| Cost effective: Spiracoustic Plus duct liner eliminates the need for costly double-wall configuration in round air ducts |
| Improves indoor building environment: improves indoor environmental quality by helping to control both temperature and sound |
| Resistant to dust and dirt: the tough acrylic polymer permacote coating helps guard against the incursion of dust or dirt into the substrate, minimizing the potential for biological growth |
| Will not support microbial growth: Permacote coating is formulated with an immobilized, EPA-registered agent to protect the coating from potential growth of fungi and bacteria |
| Noise reduction coefficient (NRC): 0.85 (R6) |
| Air velocity: 6000 fpm (30.5 m/sec) |
| Spiral duct lining system |
| Conductance: 0.23 Btu/hr.sq-ft.deg F |
| R-Value: 4.3 hr.sq-ft-deg F/Btu |
| Metal Duct ID: 18 in (min) and up |
| Finished ID: 16 in (min) and up |
