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Bali® DiamondCell® 3/8" Double Cell Northern Lights Cellular Shades Perfect Arch

  • Overall Customer Rating5 stars from 7 reviewsRead reviewsWrite a review
  • $92.00
  • Retail: $137.36

    (33% off)
  • + an extra 15% off
    use code SPANGLED at checkout Expires 7/6
24" x 36"
pick your size

The Bali DiamondCell Northern Lights Perfect Arch Cell Shade is a 100% polyester spunlace fabric available in both light filtering and room darkening options.  The Northern Lights Perfect Arch Shade will insulate your room from heat and cold while also reducing outside noise and damaging UV rays.  Available in a wide array of colors, the Northern Lights shade will match any existing interior design style.

The Northern Lights Perfect Arch Shade will feature a height that is exactly one half of the ordered width.  The perfect arch shade is consistent in style, color, and texture with other DiamondCell shades, and can also be customized to fit non-perfect arches by simply calling our knowledgeable sales representatives.

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System requirements

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  • IE 6.0+
  • Firefox 2.0+
  • Safari 3.1+
  • Google Chrome

If you are using one of these browsers and are encountering problems, please make sure JavaScript is enabled and refresh the page.

If the problem persists, you may contact us toll-free at 1 (877) 702-5463 to place an order.

  • Perfect arches require the radius of the circle to be constant at all points (height is exactly 1/2 the width)
  • All arches are stationary
  • Brackets for outside mount installations will be visible
  • To order an arch as part of a rectangular window, please contact our sales department
  • Orders for non-perfect arches (where the height does not equal half the width) will be placed on hold and you will need to send in a template of your window
  • Specifications
  • Width 9" - 60"
  • Height 12" - 42"
  • Minimum inside-mount depth 3/4"
  • Minimum flush-mount depth 1 7/8"
  • Minimum outside-mount space 7/8"
  • Headrail depth and height 1 9/16" x 11/16"

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Order your blind by following the easy steps below!
step 1

Select a product color: (13 available)

Learn more
Popcorn - 2403
  • Popcorn 2403
Popcorn - 2403
Pistachio Cream - 2464
Raffia - 2457
Cherry - 2497
Brown - 2491
Falcon - 2423
Camel - 2454
Biscuit - 2409
Squirrel Tail - 2441
Oregano - 2476
Spa Blue - 2499
Navy - 2489
Charcoal - 2433
step 2

Select a mount option:

What are my mount options?


Inside mount blinds will fit within the window casing for a clean, custom look.  Enter the actual size of your window casing, NOT the size of your old blind.  We will make the necessary deductions to make the blind fit properly.  Make sure your window meets the minimum inside mount specifications, or flush mount specifications if desired.

Outside mount blinds will be installed on the wall above the window, covering the window entirely.  Enter the size you want the finished product to be, including the desired overlap.  The ordered height will include the hardware for blinds and shades.  This option is required if your window is not deep enough to install the blind as an inside mount.

step 3

Select a size:

Need more help?
Measuring Guide
Measuring Video


Single blind

Left blind

Width: inches

Height: inches

Center blind



Right blind



step 4

Select an arch position option:

Learn more about arch position
Stand-Alone Arch

Stand-Alone Arch

Choose this option when the window has a rectangular section on the bottom and an arched section on the top, such as a palladium window.  You must order a standard shade with the same width as the arch.  The manufacturer will attach the arch to the top of the rectangular or "standard" shade, giving you one window treatment for the two parts of your window.

Choose this option when your arch is separate from another section of window - that is, the half-circle shape is completely framed in.

last step!

Optional information:

Learn more

Please address the following issues to continue:
You're done!
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Custom Product Price





Width x Height:
24" x 36"

Arch Position:



- $45.36
33% off

* Price is not complete until all sizes and options have been selected. Coupon discount reflected in cart.

- $45.36
33% off

Coupon discount reflected in cart.

Need Help?

Do It Yourself Guides, Expert Advice and Learn About an In-Home Consultation.

5 stars

"Quility Purchase"

by do-it-yourself from Ft Worth on December 25, 2010

This was my first experience at ordering window shades on line.  This is a quality product with fast shipping.  This has been a great experience and will order again.

5 stars

"Perfect Fit"

by Bob from Pasco, Washington on December 17, 2014

We purchased this perfect arch along with the bottom portion of this two piece set.  It sounded a bit complicated when ordering but the support people explained it well and we bought it on trust.  Well about 2 weeks later both parts were delivered.  The arch portion was a bit tricky, but simple and the installation came out perfect.  Everyone loves its look, feel, and overall effect on our special window.

5 stars

"Beautiful !  Perfect !"

by Barb from Dallas TX on June 28, 2014

Just bought new home and it has several arch windows.  I decided to order one just to check the quality and fit.  A little light shows on bottom corners you can see, but it's my bad measuring and its no biggie, just needed to block sun from TV glare and we are very happy with it and it does the job just fine.  The photo on here of Northern Lights is exactly what mine looks like.  I am considering the long window shades too.


Sorry, this sample is currently out of stock, but it should be back very soon. Would you like us to e-mail you when it's back in?

Thanks, we'll e-mail you when the sample becomes available.