How do I measure for an eastern overlap storm window?
To correctly measure the width, take a measurement between the inside edges of the outside casing at three points: top, meeting rail and sill. Use the smallest measurement. To correctly measure the height, take a measurement from the bottom of the top casing to the sill along the face of each side casing so as to include the slope of the sill. For a drop sill, if the sill has a drop of over 3/4″ specify the drop sill height on your order and indicate whether the drop sill has or has not been included in the overall height dimension. For instructions with illustrations and a printable PDF file please visit the EcoShield Window Systems measuring instructions here.
