Linen style thermal backed fabric provides light and draft control. Superior quality cordless roman shade design offers smooth and precise adjustment. Child and Pet safe. Easily mounted inside or outside the window frame. 2 inch depth required for inside mount. If outside mounting we recommend ordering size at least 2 inches wider then window opening to reduce light bleeding. The insulated linen style Cosmo roman shade provides room darkening and draft control. Superior quality cordless roman shade design offers smooth and precise adjustment with no messy cords to tangle with. Mounting is easy, inside or outside the window frame.