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Fig. 6Existing Window Frame - Side View <br />Measure the height. <br />Inside opening height is measured from the inside <br />face of the head jamb to the point on the sill where <br />the outside of the bottom sash meets the sill. (Do not <br />measure from sill to head parting stop.) Measure at a <br />minimum of three different locations: left, center and <br />right jamb. Round odd measurements down to the <br />nearest 1/16”. Record the smallest measurement. See <br />Fig 5 and 6.Fig. 5Height - Three Locations <br />Fig. 4Existing Window Frame - Top ViewFig. 3Width - Three Locations <br />Measure the sill angle. <br />Measure the sill angle with either an angle measurement <br />tool, found at most hardware retailers, or with the <br />template provided in this flyer. Jambliner sills are cut at <br />14° angle as standard. If your sill is more or less than <br />that, we recommend that you order the jambliners 2” <br />longer so they may be cut in the field to the exact <br />angle needed for your application. See Fig 7 and 8. <br />Measure the width. <br />For inside opening width, measure from the inside face <br />of jamb to jamb. To insure accurate measuring, the <br />existing sash and jambliners will need to be removed. <br />(Do not measure from parting stops or inside stops.) <br />Measure at a minimum of three different locations: top, <br />middle and bottom. Round odd measurements down <br />to the nearest 1/16”. Record the smallest measurement. <br />See Fig 3 and 4. <br />MeasurIng Your WIndoWs <br />Double Hung Replacement Kit <br />0° <br />9° <br />8° <br />7° <br />2° <br />4° <br />6° <br />5° <br />1° <br />3° <br />Fig. 8Existing Window Frame - Side ViewFig. 7Existing Window Frame - Side View