... of colours 4)Customerized shaped available basswood shutter window and door1) Material: Carefully selected BasswoodInterior basswood ... prime, unbeatable surface coating, waterproof,5) Features: Abundant designs, Easy to install, adjustable for air permeability, sunlight ... Frame: Optional among L1, L2, Z1, Z2. U8)Opening way: Leveling open, bi-folding opening optional Namebasswood shutter window and ...