About This Window Treatment
For total darkness and our best cellular blinds insulation, the Harmony Blackout collection is the ultimate home upgrade. These energy efficient cellular shades are designed with a specialized honeycomb core that traps air to create a powerful thermal barrier, reducing your heating and cooling costs year-round. Featuring an integrated blackout lining, these are the best cellular shades for energy efficiency and light control, blocking 99% of incoming sunlight. Whether you are looking to create the perfect sleep sanctuary or reduce your carbon footprint, our energy efficient honeycomb blinds deliver high-performance results with a refined, custom look.
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Blindsgalore Harmony Blackout Cellular Shades
Why Choose This Blackout Shade?
- Maximum Energy Efficiency: The honeycomb structure creates a heavy-duty thermal shield against extreme temperatures.
- Total Room Darkening: Integrated blackout lining ensures zero light filtration, perfect for mid-day sleepers and movie nights.
- Advanced Bluetooth Control: Optional motorization with app control allows you to schedule your shades for maximum energy savings.
- Child-Safe Design: Cordless options come standard, providing a sleek look and a safe environment for kids and pets.
- Best Placement: High-performance insulation makes these ideal for bedrooms, nurseries, and home theaters where light and temperature control are critical.
Materials & Construction
- Customize Your Climate Control:
- 3/4" Single Cell Blackout: Excellent light blockage and standard thermal protection.
- 1/2" Double Cell Blackout: Our best cellular shades for energy efficiency, featuring a secondary air pocket for enhanced insulation.
- Note: Triple cell configuration is not available in the blackout fabric option.
- Fabric: 100% non-woven polyester with an inner aluminum lining for maximum light and heat reflection.
- Curb Appeal: White street-facing backing provides a uniform exterior look while reflecting solar heat.
- Premium Hardware: Color-coordinated aluminum headrails and bottom rails ensure durability and a seamless aesthetic.
Lift Options & Operation
Standard Cordless Lift
- Safe, smooth, and effortless operation with color-coordinated handles included.
- Eliminates all dangling cords for a modern look and ultimate peace of mind.
Continuous Cord Loop
- Recommended for oversized windows or heavier double-cell blackout fabrics.
- Includes a wall-mounted safety tensioner to keep cords secure and the shade operating smoothly.
Rechargeable Bluetooth Motorization
- Operate your energy efficient honeycomb blinds from your smartphone up to 30 feet away.
- Integrated Pull Chain: Allows for manual adjustment when your device isn't nearby.
- Smart Hub Upgrade: Connect to Alexa or Google Assistant for voice-activated energy management.
- USB-C Charging: Features a built-in port in the headrail; battery typically lasts 6–12 months per charge.
Top-Down/Bottom-Up Option
Available with both cordless and motorized lifts, the TDBU option provides the perfect balance of light and privacy. Lower the top to let in natural light while the cellular blinds insulation at the bottom protects your privacy and blocks drafts.
About Our Blindsgalore Collection
The Pinnacle of Value. Our signature collection delivers designer-quality results without the big-brand markup. By working directly with the world’s leading factories, we provide professional-grade materials and expert construction at a fraction of the traditional retail cost.
The Blindsgalore Promise: Shop with total confidence, backed by our industry-leading satisfaction guarantee. By pairing world-class manufacturing with our dedicated team of experts, we ensure every detail is handled so you can simply focus on loving your view.
Need inspiration making your home as unique as you are? Head over to the Blindsgalore Blog for custom-tailored tips and endless design inspiration.
How We Calculate Your Custom Fit
Give us your exact window opening size (for inside mounts) or the total area you want to cover (for outside mounts). Our factory handles all the math to make sure your shades fit and move smoothly.
Inside Mount Factory Deductions
(These are for your information; no math is required on your part!)
- Headrail: 3/8" narrower than the width you order
- Fabric Width: 3/8" narrower than the width you order
- Height: Produced at the exact height you order
Outside Mount Factory Deductions
- Headrail: Produced at the exact width you order
- Fabric Width: 1/4" narrower than the width you order
- Height: Produced at the exact height you order
Note: Finished measurements may vary by approximately 1/8"
Will This Fit My Window?
Our window treatments are custom-crafted to fit a wide variety of spaces. If your window dimensions fall within the ranges listed below, you’re already halfway there! Next, we'll help you check your mounting space, which may vary depending on the style you choose.
Inside Mount Installation
Your window opening needs a minimum depth to hold the brackets. If your opening is deep enough, you can achieve a flush mount look where the treatment sits entirely inside the opening. Note: If your depth is between the minimum and flush requirements, your treatment will install securely but may stick out slightly from the window opening.
Outside Mount Installation
This installs on the wall or trim above your window. It’s ideal for total light control or your windows are too shallow for an inside mount. Ensure you have enough flat surface space to install the mounting brackets.
- Width 19" - 104"
- Height 20" - 137"
- Minimum inside-mount depth 1 1/2"
- Minimum flush-mount depth 2 3/8"
- Minimum outside-mount space 2 3/4"
- Headrail depth and height 2" x 1 1/2"
Please note the following exceptions to the above specifications
Cord Loop Lift
- Width 19" - 105"
- Height 20" - 137"
- Minimum inside-mount depth 3/4"
- Minimum flush-mount depth 2 1/4"
- Minimum outside-mount space 1 1/2"
- Headrail depth and height 2 1/4" x 1 3/8"
Cordless Lift
- Width 19" - 84"
- Height 20" - 84"
- Minimum inside-mount depth 1 1/2"
- Minimum flush-mount depth 2 3/8"
- Minimum outside-mount space 2 3/4"
- Headrail depth and height 2 1/16" x 1 1/2"
Cordless Top Down Bottom Up Lift
- Width 24" - 72"
- Height 20" - 84"
- Minimum inside-mount depth 1 1/2"
- Minimum flush-mount depth 2 3/8"
- Minimum outside-mount space 2 3/4"
- Headrail depth and height 2" x 1 11/16"
Rechargeable Bluetooth Motorized Lift
- Width 24" - 104"
- Height 20" - 137"
- Minimum inside-mount depth 1 1/2"
- Minimum flush-mount depth 2 3/8"
- Minimum outside-mount space 2 3/4"
- Headrail depth and height 2 3/16" x
Rechargeable Bluetooth Motorized Top Down Bottom Up Lift
- Width 34" - 104"
- Height 20" - 137"
- Minimum inside-mount depth 1 1/2"
- Minimum flush-mount depth 2 3/8"
- Minimum outside-mount space 2 3/4"
- Headrail depth and height 2 3/16" x
Customer Reviews of Blindsgalore Harmony Blackout Cellular Shades
Customers Say
What stands out in reviews is the high quality and ease of installation of these blackout cellular shades. Customers love their light blocking, noise reduction, and modern tech features like Bluetooth motorization compatible with smart home systems. Most mention satisfaction with the stylish options and durable build.Search within reviews
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Every Blindsgalore custom window treatment is backed by a manufacturer's warranty because we believe in the quality of what we sell. But we also know a warranty is only as good as the people standing behind it. That's why when you contact us, you'll speak with a real person who understands your order, your home, and your needs — not a call center or automated system.
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