Motorized Blackout Trapezoid Cellular Shades
$369.99
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How to Measure Cellular Shades
How to Measure for Inside Mount
- Measure the Depth: Measure your window frame for an inside mount. Minimum depth required: 7/8" (2.2 cm) for Standard Valances.
- Measure the Width: Place the tape inside the window frame and measure left-to-right at the top, middle, and bottom. Keep it level, record each measurement, and use the smallest one, rounding down to the nearest 1/8" (0.125").
- Measure the Height: Measure top-to-bottom at left, center, and right inside the frame. Keep the tape vertical; record each measurement. Use the largest measurement and round down to the nearest 1/8" (0.125").
Tips for Inside Mount
- Ensure your window frame has enough depth for an inside mount.
- Your window frame has enough depth for an inside mount, with a minimum depth of 7/8" (2.2 cm).
- Note that the fabric width is usually about 3/16" (5 mm) smaller than the valance (order width).
How to Measure for Outside Mount
- Measure the Space: Measure the height above the window where the headrail will be installed, ensuring enough space for the secure bracket and headrail placement.
- Measure the Width: Adding 2–6 inches (5.1 to 15.2 cm) to the exact width is recommended to cover the entire window and provide maximum light coverage.
- Measure the Height: Measure the window from top to bottom. Add 2–6 inches (5.1 to 15.2 cm) to ensure full coverage and maximum light blockage.
Tips for Outside Mount
- Add 2–6 inches to cover the trim or window, ensuring better light control and privacy.
- Outside mounting accommodates brackets and makes the window look bigger.
- Ensure 2–6 inches of flat space above the window or frame for secure bracket installation.
Product Specifications
*IM：Inside Mount
Height Range
Width Range
(IM)Minimum Depth*
Cell Size
R-Value
Depth Range
Working Temp
Sound Level
Motor Torque
Operating Speed
Battery Life
SKU
FEATURES
Ultimate Light Control
Top-Tier Insulation
Noise-Dampening Benefit
Consistent Sleep & Focus Environment
Smart Home Integration
Child-Safe Design
Superior Furniture Protection
Custom Fit Options
WHY WEFFORT
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Customize Every Detail for You
From fabrics to motors and casing styles, Weffort lets you tailor your shades to your home and lifestyle. Our in-house design and production make choices like power type and finishes easy and reliable.
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Friendly & Responsive Support
We back our products with an expert in-house team ready to help with any questions or issues. From installation tips to troubleshooting, you’ll get fast, practical support whenever you need it.
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Quick and Easy Installation
Most shades can be installed in about 10 minutes. Simple instructions and intuitive hardware make setup quick and stress-free, even for first-timers. -
Smooth and Quiet Operation
Our in-house engineered motors provide seamless, ultra-quiet operation that won't disturb your home. They are built for long-lasting durability and precise performance, combining comfort and reliability in every movement.
FAQs
The blinds is certainly unique and requires a bit of patience to install. We had issues with connectivity with the remote however the customer support from Weffort was the best! I think they are in China so email back and forth may take a little (don't expect instant reply). But if you take your time explain the problem, they will take the time to respond in timely manner.
Works perfect. Wish I would’ve found this earlier. The remote is great since our window is high and above our dresser. More color options would be better to match our other shades but since it’s mainly used for sleeping we don’t mind it too much.
Very beautiful and amazing shade. Works extremely well in my odd-shaped window. Customer service was prompt and courteous helping me walk through setting it up. Thank you Weffort!!!
The blinds were made to the dimensions I sent and fit perfectly.
We ordered customized blinds from Weffort for a triangular window in a bedroom. Measuring is quite tricky and our first blind was incorrect. We reached out to the company and they immediately responded and patiently walked us through the process to correctly measure. Although there is a bit of a language gap I cannot say enough about the representative’s patience and willingness to work with me.
Excellent product and service
Very easy for DIY very good support too
Can I order a triangular shade with a 90” hypotenuse?
Thank you for your question.Yes, we can accommodate sizes up to 90 inches.
For a custom size, please email the details of your project to support@weffortshades.com. We are happy to help.