window shutter/interior shutter/special shape,interior round shutters 1)material:basswood,paulownia,PVC 1) Material ... Carefully selected basswood(imported from Russia) interior round shutters (basswood shutters)2) Specification:A) Louver/blade:50.8mm/63.5mm/ ... coating, waterproof, anti-scratch6) Features: Abundant designs, Easy to install, Louver adjustable for air permeability, sunlight, sound, heat ...