Features:Face fits, inside or outside, to existing frame, subframe or wall outside the reveal.If your window opens out the flyscreen will be fitted on the inside and vice versa.Fixed screen - screw fitted to existing frame or wall.Powder coated Aluminium frame in white. Grey insect mesh as standard.A midbar may be used to provide additional support for larger screens.Benefits:Simple cost effective method of Screening windows.Made to Measure (supplied ready for you to fit).Measuring:Measure width and height of the aperture, plus any bevelled edges on the window frame.Add 25mm of flat surface on each side (for the screen frame to rest against).Any locating wedge for a cockspur handle must be included in the aperture measurement, and there must be at least 25mm of flat surface beyond it.Made to Measure - we will make to the exact size you provide us. Width: Aperture (and bevelled edges) + 50mm of flat surface = ______mmHeight: Aperture (and bevelled edge) + 50mm of flat surface = ______mmDo you need to build a sub-frame?https://www.flyscreen.com/aluminium-window-screen-domestic-light-commercial-made-to-measure-572