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Measuring for Blinds

Take the Guesswork Out of Measuring Yourself...

Measuring is guaranteed "goof proof" when you use a professionally trained blind installer.

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.

Measuring for Horizontal Blinds

Inside-Mounted Horizontal Blinds

Inside Mount
  1. Measure exact window width at top, middle, and bottom.
  2. 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.
  3. Measure exact window height at left, middle, and right side.
  4. 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.

Outside-Mounted Horizontal Blinds

Outside Mount
  1. Measure exact width where the blind is to be placed.
  2. Add at least 3 inches for overlap (1-1/2" per side) for optimum light control and privacy.
  3. 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.
  4. Add 1-1/2" to the height for optimum light control.

Measuring for Vertical Blinds

Inside-Mounted Vertical Blinds

Inside Mount

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 3 ⁄4" deep for flush vane mount (See diagram above). Window should have a minimum recessed space of 2 3⁄8" for inside mount.

  1. 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.
  2. Measure the exact height in three different places from top edge of opening to top of sill. Record the shortest measurement.
  3. 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.
  4. Do not take deductions. Allowances are made at the factory to ensure a perfect fit.

Outside-Mounted Vertical Blinds

Outside Mount
  1. 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.
  2. 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.
  3. 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.

IMPORTANT NOTE:

The factory makes NO allowances on outside mount.

Vertical Blinds Stack Control Options

Outside Mount
  1. 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.
  2. 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.
  3. 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 DrawSplit DrawOne-Way DrawSplit DrawOne-Way DrawSplit Draw
C.O.F.B.W.C.O.F.B.W.C.O.F.B.W.C.O.F.B.W.C.O.F.B.W.C.O.F.B.W.
10 13 1⁄48 5⁄813 1⁄465 1⁄87563 3⁄475120 3⁄4137 1⁄4119 3⁄8137 1⁄4
12 3⁄416 1⁄4

6878 1⁄4

123 3⁄4140 1⁄2

15 5⁄819 1⁄219 1⁄214 1⁄470 3⁄481 1⁄469 3⁄881 1⁄4126 3⁄4143 1⁄2125143 1⁄2
18 3⁄822 1⁄2

73 5⁄884 1⁄2

129 1⁄4146 3⁄4

21 1⁄425 3⁄419 7⁄825 3⁄476 3⁄887 1⁄27587 1⁄2132149 3⁄4130 1⁄2149 3⁄4
23 7⁄828 3⁄4

79 1⁄490 3⁄4

134 7⁄8153

26 5⁄831 3⁄425 1⁄831 3⁄48293 3⁄480 1⁄293 3⁄4137 1⁄2156136 1⁄8156
29 1⁄235

84 5⁄896 3⁄4

140 1⁄2159 1⁄4

32 1⁄83830 3⁄43887 1⁄210086 1⁄8100143 1⁄4162 1⁄4141 3⁄4162 1⁄4
34 7⁄841

90 1⁄8103

145 7⁄8165 1⁄4

37 1⁄244364492 7⁄810691 1⁄2106148 3⁄4168 1⁄2147 3⁄8168 1⁄2
40 1⁄247 1⁄4

95 3⁄4109 1⁄4

151 3⁄8171 1⁄2

4350 1⁄441 5⁄850 1⁄498 3⁄4112 1⁄297 1⁄4112 1⁄2154 3⁄8174 3⁄4152 7⁄8174 3⁄4
45 3⁄453 1⁄2

101 3⁄8115 1⁄2

157 1⁄4178

48 3⁄456 1⁄247 1⁄456 1⁄2104 1⁄4118 3⁄4102 7⁄8118 3⁄4160181 1⁄2158 1⁄2181
51 3⁄859 1⁄2

107121 3⁄4

162 7⁄8184 1⁄4

54 1⁄462 3⁄452 7⁄862 3⁄4109 7⁄8125108 1⁄2125165 3⁄4187 1⁄2164187 1⁄4
5765 3⁄4

112 1⁄2128

168 1⁄2190 1⁄2

59 7⁄86958 1⁄269115 1⁄2131 1⁄2114131 1⁄2169 1⁄2191168191
62 1⁄272

118 1⁄8134 1⁄4





C.O. = Clear Opening F.B.W. = Finished Blind Width

Measuring for Roller Shades

Inside-Mounted Roller Shades

Inside Mount

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.

  1. 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.
  2. Measure height in three places from top edge of opening to top of sill. Record the longest measurement.
  3. 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-Mounted Roller Shades

Inside Mount

Outside mount shades are installed outside the window casing, covering an area larger than the window itself.

  1. 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.
  2. 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.

Inside Mount

IMPORTANT NOTE:

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.

Measuring for Faux & Real Wood Shutters

Please Note: There are special measuring instructions for the following Faux & Real Wood Shutter collections: Steve's Exclusive PolyClad, Solid PolyCore, Grand View Poly, Woodlite, Solid Wood - Neutrals, Stained Solid Woods & Norman's Woodlore Faux Wood Shutters. If you are ordering any of these collections click here for measuring instructions. Not sure which shutter type is right for you? Click here to use our Custom Wood & Faux Wood Shutters Design Guide! If you are ordering from any other Faux or Real Wood Shutter collection please use the following instructions to measure:

Inside-Mounted Shutters

Inside Mount
  1. Measure exact window width at top, middle, and bottom. Record the smallest measurement to 1/16" For windows with mullions (vertical dividers which provide added structural support), the panel width will remain the same if ordered with a t-post, or without.
  2. Measure the height in three places (left, middle & right) and record the smallest measurement to 1/8". Please note: If ordering two shutter panels to be placed next to each other, please be sure that the heights of the panels are equal. If they are not this may result in a difference in louver count or rail size.
  3. Measure the window diagonally in two places as shown. If the two diagonal dimensions are not equal, we recommend that you choose to mount your shutter with a frame as opposed to choosing "no-frame" to avoid uneven light gaps. If the diagonal measurements are more than 3/8" off then we recommend choosing an outside mount.

Outside-Mounted Shutters - Window with Existing Trim

Outside Mount
  1. Measure from outside of trim to outside of trim in three places (top, middle & bottom). Ensure the frame does not extend into the opening. Record the largest measurement to 1/16". If the chosen frame extends past the edge of the trim, then measure the width from outside of trim to outside of trim in three places (top, middle & bottom). Add it to the measurement that the frame extends past the trim oneach side. If installing around trim: Measure from outside of trim to outside of trim in three places (top, middle & bottom). Record the largest measurement to 1/16".
  2. Measure from outside of trim to outside of trim in three places (left, middle & right). Ensure the frame does not extend into the opening. Record the largest measurement to 1/8". If the chosen frame extends past the edge of the trim, then measure the height from outside of trim to outside of trim in three places (top, middle & bottom). Add it to the measurement that the frame extends past the trim on each side. If installing around trim: Measure from outside of trim to outside of trim in three places(left, middle & right). Record the largest measurement to 1/8". Please note: If ordering two shutter panels to be placed next to each other, please be sure that the heights of the panels are equal. If they are not this may result in a difference in louver count or rail size.

Outside-Mounted Shutters - Window with No Trim

Outside Mount
  1. Measure the inside width in three places (top, middle & bottom). Take the largest measurement to 1/16" and make sure to add additional to allow for the frame selected.
  2. Measure the inside height in three places (left, middle & right). Take the largest measurement to 1/8" and make sure to add additional to allow for the frame selected. Please note: If ordering two shutter panels to be placed next to each other, please be sure that the heights of the panels are equal. If they are not this may result in a difference in louver count or rail size.

Divider Rails

If choosing to include divider rails in your shutter design first measure from the bottom of the sill or window opening to the middle of the divider rail location. Note: A divider rail is required for shutter panels 60” or more in height with a maximum of 50” between the middle of the divider rail and either top or bottom rail. Two divider rails are required for panels 90” or more in height.

Divider Rails

IMPORTANT NOTE:

Make sure that when measuring for your new shutters that your chosen frame and louver size will function properly once installed into the opening. Ensure the chosen application will overcome any possible obstructions such as latches, cranks or windows that open into the room. If ordering for an outside mount, In order to overcome these obstacles, add the necessary frame extensions to the appropriate frame.

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