Maintenance: You can use feather dust or damp cloth to remove dust Name: bamboo roller blind Quantity: 1 (including: curtains, all installation accessories) Size: width x height (can be customized) Shading rate: about 70% Working principle: traction rope Breathable, shading, 【Measurement methods】: Internal installation measurement: Step 1. Measure the width of the inner frame in three positions (top, middle and bottom). Record the smallest of the three measurements and use that number minus 1/4 inch as the internal width when ordering. Step 2. Measure the height at 3 positions (left, center and right). Record the smallest of the 3 measured values ​​and use this number as the internal height when ordering. External installation size: Step 1. Measure the width of the external frame and add 6-10 inches as the external installation width. Step 2. Measure the length of the external frame, plus 6-10 inches as the external installation length. It is recommended to overlap to properly cover and avoid any optical gaps. We are always committed to providing you with quality service. If you have any questions, please feel free to contact us. Of course, if you are satisfied with our products and services, please leave your valuable comments and suggestions. All products are in kind and measured manually. Due to the different angles of light and display, it is inevitable that there will be slight color difference and error, please refer to the received item Since we are international logistics, the delivery time is 15-25 days, please be patient.