... basswood,paulownia,pine) and PVC 2.Accomplished with shutter panels interior roller shuttershutters with shutter panels, frames, hinges and magnetsStandard ... , round, octagon, elliptic, cafe, double over hang and french door.custormised styles availableSizesLouver:2.5", 3.5", 4.5"width ... for air permeability, sunlight, sound, heatEnvironmental-friendly heze kaixin Wooden interior roller shutter