Marvin Insert Window
Measuring Instruction
Before You Begin

These measuring instructions cover the following
product types: Marvin Ultimate Replacement
Casement/Awning windows; and Marvin Insert
Double Hung windows.

Be sure to inspect the exterior around the existing
window unit for rot or deterioration. If there is
damage to the exterior, a full frame unit installation
may be a better choice.


Products are manufactured by inside opening (IO)3/8" (10) narrower in width and 1/4" (6) smaller in
height than measurement specified.
NOTE: Numbers listed in parentheses () are metric
equivalents in millimeters to the nearest whole number.
You will need to supply:
Angle finder
Tape measure
It may be necessary to cover the resulting gap with
trim after installation.
A
A
G
F
A
Top of sill
B
D
B
D
B
E
C
Existing Double Hung Frame
Inside Frame
Existing Casement Window
Inside Sash Opening
Existing Casement Window
Required Measurements
NOTE: To calculate the exact frame size, refer to the standard sizing charts and/or measurement conversions in
the Marvin ADM.
NOTE: Measurement is from wood surface to wood surface. Do not measure width from parting stops, blind stops,
hardware, or weather strip.
1. Inside Opening Width (A): Measure inside of frame at three locations: the sill, center of jambs, and head
jamb. Record the narrowest measurement.
2. Inside Opening Height (B): Measure from the top of the sill to the bottom of the head jamb. (or use
Measurement D + Measurement E)
3. Sill Angle (C): Use an angle finder to determine the sill angle to the nearest degree.
4. Stool Height (D): Use a measuring tape to determine the stool height.
Recommended Measurements
5. Measure the width of the blind stops from the inside opening to the edge of the blind stop (F). If width exceeds
1/2" (13), modification to the blind stop or an exterior installation may be necessary.
6. Measure Jamb pocket depth (G). If depth is less than 3 1/4" (83), modification to the pocket may be necessary.
(Exterior installation is recommended for pocket depths less than 3 1/4".)
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Marvin Insert Window
Measuring Instruction
Inside Opening
Interior Frame Size
Exterior Frame Size
Inside Opening
Interior Frame Size
Exterior Frame Size
Interior Frame Size
Inside Opening
Inside Opening
Frame Size
Ultimate Replacement Casement
8°
3°
14°
Flat Frame Bevel
(0 < 8° sill)
8° Frame Bevel
(8° < 14° sill)
Flat Frame Bevel
(0 < 8° sill)
14° Frame Bevel
(14° and > 14° sill)
IMPORTANT
The 8 and 14 degree frame bevel option max stool height (F) is 3/4" (19). See illustration 1. For the flat frame option
the max stool height is 15/16" (24). It may be necessary to shim under the replacement unit to reduce the stool
height. This will decrease the Inside Opening Height (B) measurement for the replacement unit. This specification
is required for proper operation of the Ultimate Replacement Casement crank handle.
3 11/32" (85)
3 1/4" (83)
PROJECT
MEASURED BY:
DATE:
1/2"
(13)
Required Measurements
3/16" (5)
3/16" (5)
11/16"
(17)
11/16"
(17)
1/2"
(13)
CURCA Sill Detail
WURCA Sill Detail
NOTE: Follow the steps on the previous page to fill in this worksheet.
Measurement A: Inside opening Width (narrowest width)
Measurement B: Inside Opening Height (narrowest height)
Measurement C: Sill Angle
Measurement D: Stool Height
Interior Frame Size to Frame Size (exterior)
Frame Bevel
Height Conversions
0°
0
8°
+ 3/16" (5)
14°
+ 11/16" (17)
IMPORTANT
Units ordered by Inside Opening (IO) will be
manufactured 3/8" (10) smaller in width and 1/4" (6)
smaller in height than the IO measurement specified.
Measuring Information
Ordering Information
Required Measurements
Window
Location
Product
Description
IO Width
A
IO Height
B
Sill Angle
C
Stool Height
F
Inside Opening
Frame Size
(from exterior)
Width
0°*
8°
14°
Height
Frame
Bevel
* Default frame bevel
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Marvin Insert Window
Measuring Instruction
Flat Frame Bevel
(0 < 8° sill)
Flat Frame Bevel
(0 < 8° sill)
8° Frame Bevel
(8° < 14° sill)
14° Frame Bevel
(14 and > 14° sill)
4 9/16"
4 9/16"
(115)
(115)
PROJECT
Inside Opening
Interior Frame Size
Exterior Frame Size
Inside Opening
Interior Frame Size
Exterior Frame Size
Inside Opening
Exterior Frame Size
Inside Opening
Exterior Frame Size
Ultimate Insert Double Hung
4 9/16"
(115)
MEASURED BY:
DATE:
1/2" (13)
1" (25)
9/16"
1"
Required Measurements
NOTE: Follow the steps on the first page to fill in this worksheet. Interior Frame Size to Frame Size (exterior)
Frame Bevel
Height Conversions
Measurement A: Inside opening Width (narrowest width)
0°
0
Measurement B: Inside Opening Height (narrowest height)
8°
+ 9/16 (14)
Measurement C: Sill Angle
14°
+ 1" (25)
Measurement D: Stool Height
IMPORTANT
Units ordered by Inside Opening (IO) will be manufactured 3/8"
than the IO measurement specified.
(10)
smaller in width and 1/4"
Measuring Information
Window
Location
Product
Description
IO Width
A
smaller in height
(6)
Ordering Information
Required Measurements
Inside Opening
IO Height
B
Width
Sill Angle
C
Stool Height
D
Height
0°*
8°
14°
Frame
Bevel
* Default frame bevel
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Marvin Insert Window
Measuring Instruction