Two mounting options: This day and night blind can be attached to the window frame without drilling using the included hooks in 5 minutes. Suitable for window frame thicknesses of 18-23 mm. For windows that cannot be opened, you can also mount the Roman blind by drilling into the wall, ceiling, or window frame. We provide both types of accessories, so you don't need to purchase any additional ones. Protect your privacy: This blind can soften the light in the room, and at the same time, the day and night blind can also protect your privacy thanks to the different colored fabric strips. Order width: Window width plus 8 cm. The fabric width should not extend beyond the door handle to avoid situations where it cannot be used normally. Wide range of uses: Our drill-free day and night blind is suitable for all types of rooms, such as offices, bedrooms, and more. The living room and children's room, for balcony and patio doors. The curtains can also be used in damp rooms such as the bathroom. The no-drill blackout blind includes a safety lock to protect children. Easy to use: Using the chain, our roller blind is continuously adjustable from semi-transparent to opaque. The blind chain can be moved to either side. The blind is equipped with an anti-wear device, which can reduce fabric wear during use.