SPIRA SD 1 x 48 x 120 CT
Spiracoustic Plus? SD 1 x 48 x 120 240.0 SF/CT
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 JM?s factory-applied proprietary black Permacote? acrylic coating.