... waterproof,5) Features: Abundant designs, Easy to install,Louver adjustable for air permeability, sunlight, sound, heat, environmental-friendly 6) Colors ... sea or by air Color swatcheswood shutter Sample case Accessories Opening way Structure The making process CertificateWho you are ... solve any problems.Contact person:BillMob:+0086-18680407896 4.5" louver T post for L frame Wooden Plantation shutters