How to Measure Cellular Shades

You've got this! Follow these simple steps to get perfect measurements every time.

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Product Specifications

Size range: 14" to 118" wide × 18" to 118" high
Control restrictions may apply to maximum sizes

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What You'll Need

Required tools:

• Steel tape measure (most accurate)
• Notepad or phone for recording measurements
• Step ladder (if measuring high windows)

Before you begin:

• Clear the window area completely
• Check for obstructions (handles, locks, trim pieces)
• Have good lighting to see measurement marks clearly

⚠️ Important: Measure each window individually — even windows that look identical can vary by ¼" or more.

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Step 1: Choose Your Mounting Style

Select the option that works best for your window and desired look:

Inside Mount ✅ Recommended for energy efficiency

Best for: Maximum insulation and clean, built-in appearance

Requirements:

• Minimum 2" depth from glass to front of window frame
• No obstructions that interfere with shade operation
• Square, even window frame

Benefits:

• Superior thermal performance
• Seamless, architectural look
• Better light control at top and bottom

Outside Mount

Best for: Maximum light blocking and visual impact

When to choose:

• Shallow windows (less than 2" depth)
• Uneven or damaged window frames
• Want to make windows appear larger
• Need complete light coverage around frame edges

Benefits:

• Covers entire window opening plus frame
• Hides window imperfections
• Maximum privacy and light control

Ceiling Mount

Best for: Modern windows or architectural openings without traditional frames

When to choose:

• No window frame present
• Contemporary architectural style
• Want dramatic ceiling-to-floor coverage

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Step 2: Measure Width

Record measurements as: Width × Height (W × H)

Inside Mount Width

1. Measure across the top of the window frame from inside edge to inside edge
2. Measure again at the middle of the frame
3. Measure once more at the bottom of the frame
4. Record the narrowest measurement

We'll make the necessary deductions — just give us your exact frame measurements.

Outside Mount Width

1. Measure the exact width you want the shade to cover
2. Add 2-4" on each side (4-8" total) for optimal light blocking
3. Record your final desired width

Your shade will be made exactly to this measurement.

Ceiling Mount Width

1. Measure the window opening width
   
2. Record your total desired coverage width

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Step 3: Measure Height

All Mount Types

1. Decide where you want the shade to end:

   • At the windowsill
   • Below the sill
   • At the floor
   • Any point in between

2. Measure from top to your chosen end point

3. Add 2-4" extra length for flexibility and better light control

Pro tip: The extra length allows you to adjust coverage and ensures better energy efficiency.

Height Measuring Technique

• Measure in three places: left side, center, right side
• Use the longest measurement
• This accounts for uneven floors or frames

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Step 4: Select Your Control Option

Available controls:

• Cordless lift: Clean look, child-safe operation
• Motorized: Ultimate convenience with remote or app control

For motorized shades: Choose which side you want the charging port located — pick the side that's most accessible at the top of your window.

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Step 5: Record Your Final Measurements

Format: Always write Width × Height (W × H)

Width rounding rules:

• Inside mount: Round DOWN to nearest ⅛"
• Outside mount: Round UP to nearest ⅛"
• Never round to ½" or whole inches

Example: 36⅜" × 54¾"

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Ready to Order!

Your measurements are complete and ready for processing.

Need help? Contact our team with questions — we're here to ensure your shades fit perfectly.

Energy efficiency tip: Inside-mounted cellular shades provide the best thermal performance by creating an insulating air pocket within your window frame.

 

Questions? Email us at hello@shadeit.com, and we’re happy to help. No shade.