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Height: Measure height from
the back of sill at the stop to the top of the
frame. Measure at left side, right side, and the
middle. Use the smallest measurement for ordering.
Width: Measure width
between jambs as shown. Take measurements at the top,
middle and bottom of the jamb. Record the smallest
measurement.
Depth of the replacement unit is
2 /4" for Aluminum, and 3 3/8" for Vinyl.
All measurements should be
rounded to the nearest 1/8" increment. |