... eye,bright dark room,easy install 4.CE,SGS decoration shutter(factory price, good quality, timely delivery)EL shutters as ... Material: Carefully selected basswood and EL panels2) Specification:A) Louver/blade:50.8mm/63.5mm/76.2mm/88.9mm/114 ... waterproof, anti-scratch6) Features: Abundant designs, Easy to install, Louver adjustable for air permeability, sunlight, sound, heat, environmental-friendly7) ...