Blackout Fabric- Manuel Mechanism with Chain- Right Sided-Your Roller Shade is produced from the fabric and mechanism. -After selecting the width of your roller shade that suits you, the length will be produced as 78 inches (198 centimeters). Comes with free metal brackets, screws and anchors for easy installation.*How to Measure width of your Roller Shade:-If you want to install your roller blind inside the window frame; To find the width, you need to measure from the two inner edges of the frame (right and left). -If you want to hang your roller blind outside the window frame: Make sure to choose the measurement of your roller blind slightly wider than the width of your window frame.*Product Details:-The product you have chosen is made from Blackout Fabric, which blocks of external light.-This roller shade features a manual mechanism operated by a durable aluminum chain, and the chain is positioned on the right side.