Perfect Fit Blinds by Louvolite are an innovative product that allows different styles of window blinds to be installed directly to the frame of your window or door without the need for drilling or screwing, making them perfect for UPVC windows. Perfect Fit Roller, Venetian, Wooden, Vision, Pleated and Cellular blinds are simply and satisfyingly snap-fitted to your window, mounted on brackets that slide between the glass and the beading of your window and door.