Product Info: Perfect Fit Blackout Blinds are one of the best & easiest to install solutions for rectangular UPVC windows & conservatory windows as they require no drilling to fix! They attach onto the window via metal brackets which slip in between the glass & beading of your window allowing the blind to simply clip into place. We print the fabric to order, giving you a truely bespoke finish you won't find anywhere else. Please note that although the fabric will provide complete blackout, this product is not a total blackout blind & some light will leak in between the sides of the fabric & the internal sides of the Perfect Fit frame. This product is perfect for French Doors as the blind moves with the door when you open and close.