... , bi-folding opening , special shape shutterSizesLouver:2.5", 3.5", 4.5"widthUsageWidely used in villas, star hotels, office buildings and ... ,fixed,folding,etcOEM service offeredFinishing: Quality prime, unbeatable surface coating, waterproof,Environmental-friendly,energy conservation, exquisite kaixin high quality wooden bathroom window shutters