Measurement is vital for a good
installation.
When you order a replacement window, it is made to
fit the opening, so it is important to correctly measure the opening. There
are three critical measurements involved: width, height and square. Note
that all measurements should be in inches. |
Width
This is the measurement given first when ordering
a window. Because the inside stops and parting stops are removed, the width
must be measured from jamb to jamb. Measure at the top, middle and bottom,
and deduct 1/2" from the smallest dimension for the order width (W).
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Height
The height of the window is taken from the sill (from
the point against the stool) to the header (at the point against the inside
stop). Measure at the left, middle and right, and deduct 1/2" from
the smallest dimension for the order height (H). |
Square
Because some openings may have become out of square
over the years, it is important that the squareness of the opening be accurately
assessed. Measure the diagonals (upper left to lower right, and upper right
to lower left) as accurately as possible from the point inside the stool
to a point against the inside stop at the header. Record the two dimensions.
If they are roughly equal, the opening can be assumed to be square. If they
are not, then it is possible that the opening is enough out of square to
cause the window to be forced into an out of square condition during installation.
If any window is forced out of square, the window can leak air and water
and the locks may not operate correctly.
If the diagonal measurements are not equal, it may be necessary to order
a window that is 1/8" to 1/4" less than your calculated height
(ie: deduct 5/8" to 3/4" from the actual height measurement).
This will allow the new window to be installed square in the opening. Then
adequate sealing of the new window perimeter will complete the airtight
installation.
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Ordering
Calculate the width (W) and height (H)
required for your new window as described above. Now add W and H: the
total is known as the United Inches dimension of the window. Prices for
replacement double-hung windows are based on this dimension. Enter the
specific dimensions for your window when you add it to the shopping cart
on the next screen after you click on the Buy One Now button for the appropriate
size range.
Series 2000 Double-Hung
Windows
Minimum width = 18" Minimum height = 28"
Maximum width = 48" Maximum height = 72"
Maximum "United Inches" = 120 |
Series 5000 Double-Hung
Windows
Minimum width = 18" Minimum height = 28"
Maximum width = 52" Maximum height = 80"
Maximum "United Inches" = 120 |
| 46-73 United Inches |
 |
| 74-83 United Inches |
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| 84-93 United Inches |
|
| 94-101 United Inches |
|
| 102-110 United Inches |
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| 111-120 United Inches |
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| 46-73 United Inches |
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| 74-83 United Inches |
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| 84-93 United Inches |
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| 94-101 United Inches |
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| 102-110 United Inches |
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| 111-120 United Inches |
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Series 5000 Casement Windows
Minimum width = 17" Minimum height = 22"
Maximum width = 30" Maximum height = 65"
Maximum "United Inches" = 95 |
Series 5000 Awning Windows
Minimum width = 19" Minimum height = 14"
Maximum width = 60" Maximum height = 45"
Maximum "United Inches" = 86 |
| 39-48 United Inches |
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| 49-58 United Inches |
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| 59-68 United Inches |
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| 69-78 United Inches |
|
| 79-88 United Inches |
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| 89-95 United Inches |
|
|
| 33-48 United Inches |
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| 49-58 United Inches |
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| 59-68 United Inches |
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| 69-86 United Inches |
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