Measuring for Blinds
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How to Measure Yourself
Inside or Outside Mount?
The first decision that needs to be made before you measure your windows is whether you want to mount the blind on the inside or outside of the window frame.
Blinds mounted on the inside of the window frame provide a clean look. On an inside mount the headrail will sit back in the window casing so that it will emphasize the actual size of the window and it allows your window molding to be visible. If you want your blind to fit flush with the window molding you need to make sure you have enough depth in your window to accommodate the width of the headrail (each style of blind will need a different amount of depth to fit flush but as a general rule for blinds go horizontally across your window you will need 1" to 3" and for vertical blinds you will need 3" to 4"). Even if you do not have the necessary depth for a flush mount you can still do an inside mount and the blind will just project slightly out from the window molding.
Blinds mounted on the outside of the window frame provide the illusion of a longer and wider window and it can help in hiding an unattractive window. On an outside mount a blind can be mounted either on the window molding itself or above and beyond the window molding. An outside mount always provides for greater privacy and light control. An outside mount may be your only option if the window is not deep enough to contain at least the blind mounting brackets.
Type of Blind
Choose your blind type to find your custom measuring instructions:
Measuring for Horizontal Blinds
- Measure exact window width at top, middle, and bottom.
- Use the narrowest width. Do not make any deductions - provide the exact measurements of the narrowest width. The factory will make the necessary deductions to accommodate for the headrail and mounting brackets.
- Measure exact window height at left, middle, and right side.
- Use longest height. Do not make any deductions - provide the exact measurements of the longest height. With Vertical Blinds the factory will make any necessary deductions to accommodate for the height of the headrail.
- Measure exact width where the blind is to be placed.
- Add at least 3 inches for overlap (1-1/2" per side) for optimum light control and privacy.
- Measure exact height from the top of the proposed headrail location to the base of the sill. If there is no sill, measure to where the blind is to reach.
- Add 1-1/2" to the height for optimum light control.
Measuring for Vertical Blinds
Inside mount blinds are installed inside the window casing or door, or wall to wall in a room. The window casing must be at least 2 3⁄4" deep for flush track mount or 3 ⁄4" deep for flush vane mount (See diagram above). Window should have a minimum recessed space of 2 3⁄8" for inside mount.
- Measure the width of the window from the top of the opening to the sill in 3 places. Use the smallest dimension for the blind height. The factory will automatically deduct up to 1⁄8 inch.
- Measure the exact height in three different places from top edge of opening to top of sill. Record the shortest measurement.
- Measure the window diagonally in two places as shown. If the two diagonal dimensions are not equal, we recommend an outside mount application for optimal shade function and aesthetics.
- Do not take deductions. Allowances are made at the factory to ensure a perfect fit.
- Measure the exact width of window, including the frame/molding if there is one. Add 3" for each side (6" total overlap) to ensure light control and privacy.
- Measure the exact height of window from top edge of molding to bottom edge, or to top of sill if there is one. Add 3" to allow for adequate mounting area above the window.
- If blind extends to the floor (i.e. to cover patio door) measure as in step two but deduct 1⁄2" for clearance so the vanes do not touch the floor.
The factory makes NO allowances on outside mount.
- Determine your preferred stacking option, choose from: one-way draw or split draw (See images above). Note: if ordering one-way draw select for blinds to stack on either the left or the right.
- Measure the window width including molding (Referred to as "Clear Opening"). Note: adding at least 3" to the width is recommended when ordering one-way draw.
- Reference the "Vertical Blind Stacking Chart" below. Use your Clear Opening Width ("C.O." on the chart) to find the corresponding dimension found in the "Finished Blind Width" (F.B.W. on the chart). Use the Finished Blind Opening Value when ordering. Example: If determined width for One-Way Draw Clear Opening is 54 3⁄8", Then you will order Finished Blind Width of 63 1⁄8".
|Vertical Vane Stacking|
|One-Way Draw||Split Draw||One-Way Draw||Split Draw||One-Way Draw||Split Draw|
|10 ||13 1⁄4||8 5⁄8||13 1⁄4||65 1⁄8||75||63 3⁄4||75||120 3⁄4||137 1⁄4||119 3⁄8||137 1⁄4|
|12 3⁄4||16 1⁄4||68||78 1⁄4||123 3⁄4||140 1⁄2|
|15 5⁄8||19 1⁄2||19 1⁄2||14 1⁄4||70 3⁄4||81 1⁄4||69 3⁄8||81 1⁄4||126 3⁄4||143 1⁄2||125||143 1⁄2|
|18 3⁄8||22 1⁄2||73 5⁄8||84 1⁄2||129 1⁄4||146 3⁄4|
|21 1⁄4||25 3⁄4||19 7⁄8||25 3⁄4||76 3⁄8||87 1⁄2||75||87 1⁄2||132||149 3⁄4||130 1⁄2||149 3⁄4|
|23 7⁄8||28 3⁄4||79 1⁄4||90 3⁄4||134 7⁄8||153|
|26 5⁄8||31 3⁄4||25 1⁄8||31 3⁄4||82||93 3⁄4||80 1⁄2||93 3⁄4||137 1⁄2||156||136 1⁄8||156|
|29 1⁄2||35||84 5⁄8||96 3⁄4||140 1⁄2||159 1⁄4|
|32 1⁄8||38||30 3⁄4||38||87 1⁄2||100||86 1⁄8||100||143 1⁄4||162 1⁄4||141 3⁄4||162 1⁄4|
|34 7⁄8||41||90 1⁄8||103||145 7⁄8||165 1⁄4|
|37 1⁄2||44||36||44||92 7⁄8||106||91 1⁄2||106||148 3⁄4||168 1⁄2||147 3⁄8||168 1⁄2|
|40 1⁄2||47 1⁄4||95 3⁄4||109 1⁄4||151 3⁄8||171 1⁄2|
|43||50 1⁄4||41 5⁄8||50 1⁄4||98 3⁄4||112 1⁄2||97 1⁄4||112 1⁄2||154 3⁄8||174 3⁄4||152 7⁄8||174 3⁄4|
|45 3⁄4||53 1⁄2||101 3⁄8||115 1⁄2||157 1⁄4||178|
|48 3⁄4||56 1⁄2||47 1⁄4||56 1⁄2||104 1⁄4||118 3⁄4||102 7⁄8||118 3⁄4||160||181 1⁄2||158 1⁄2||181|
|51 3⁄8||59 1⁄2||107||121 3⁄4||162 7⁄8||184 1⁄4|
|54 1⁄4||62 3⁄4||52 7⁄8||62 3⁄4||109 7⁄8||125||108 1⁄2||125||165 3⁄4||187 1⁄2||164||187 1⁄4|
|57||65 3⁄4||112 1⁄2||128||168 1⁄2||190 1⁄2|
|59 7⁄8||69||58 1⁄2||69||115 1⁄2||131 1⁄2||114||131 1⁄2||169 1⁄2||191||168||191|
|62 1⁄2||72||118 1⁄8||134 1⁄4|
C.O. = Clear Opening F.B.W. = Finished Blind Width
Measuring for Roller Shades
Inside mount shades are installed inside the window casing. To install the product flush with the window frame, a minimum window depth of 2" is required without a valance and a minimum window depth of 4" is required with a valance.
- Measure inside width of window casing from one inside edge to the other, at the top, middle, and bottom and use the narrowest dimension for ordering. The factory will make any appropriate deductions. Do not make any deductions. Specify if your width measurement is the total shade width you desire (tip-to-tip) or the width of the fabric (cloth-to-cloth). The cloth-to-cloth measurement is 13⁄8" less than the tip-to-tip measurement. The factory will automatically take an allowance of 1⁄2" for operating clearance unless you specify otherwise.
- Measure height in three places from top edge of opening to top of sill. Record the longest measurement.
- Measure the window diagonally in two places as shown. If the two diagonal dimensions are not equal, we recommend an outside mount application for optimal shade function, light control and privacy. (When adding a scalloped hem, shade height is measured to the top of the scallop.)
Outside mount shades are installed outside the window casing, covering an area larger than the window itself.
- Measure width to be covered, including desired overlap for light control and privacy. (Add 3" to each side for overlap, 6" total.) When outside mount blinds are specified, no factory deductions are taken on the roller but on the fabric it will be narrower. Specify if your width measurement is the total shade width you desire (tip-to-tip) or the width of the fabric (cloth-to-cloth). The cloth-to-cloth measurement is 13⁄8" less than the tip-to-tip measurement.
- Measure height to be covered, including desired overlap for light control and privacy. (When adding a scalloped hem, shade height is measured to the top of the scallop.)
Roller Shades Lights Gaps
On continuous loop and motorization inside mounts, there is approximately 11⁄16" light gap per side. On cordless inside mounts, there is approximately 1" of light gap on right and just over 1⁄2" on left (light gaps are opposite for reverse roll option). For optimal light and glare control, outside mount is recommended, or you may add a secondary soft window treatment (drapery or curtain) to hide the light gap on an inside mount.
Fabric width is 11⁄8" to 13⁄8" narrower than finished shade width of the tube and its components on continuous loop & motorized. Fabric width is 1" narrower than the finished shade width of the tube and components (without valance or side covers) on cordless.