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Birthday Spectrum Card

4.9 out of 5 stars rating
17270 Total Reviews |
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Paper Type
Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
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About Folded Greeting Cards

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Folded Greeting Card
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Size: Standard, 5" x 7"

Thank you, hello, or I love you, custom greeting cards are thoughtful gifts that are always the perfect way to express yourself.

  • Dimensions: 5" x 7" (portrait); 7" x 5" (landscape)
  • Full colour CMYK print process
  • Double sided printing for no additional cost

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

  • Exclusively made for Zazzle
  • Made and Printed in the USA
  • FSC® Certified—sourced from responsibly managed forests that protect both people and planet

About This Design

Birthday Spectrum Card

Birthday Spectrum Card

OK, so it's really more of a periodogram than a spectrum. And yeah, the centre frequency looks a little off. And you probably wouldn't get that much leakage if you windowed the data properly. Tell ya what: how about you put all that fancy thinking to good use and come up with a clever birthday-themed message to go inside. Something like: Hertz, don't it? Ha! See? There ya go. No charge.
LabKitty
Pro
Artwork designed by
Circle Pines, United States
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Customer Reviews

4.9 out of 5 stars rating17.3K Total Reviews
16269 total 5-star reviews714 total 4-star reviews118 total 3-star reviews59 total 2-star reviews110 total 1-star reviews
17,270 Reviews
Reviews for similar products
5 out of 5 stars rating
By Debra J.April 17, 2024 • Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Really pleased with the card quality. The perfect theme to personalize a birthday celebration. Birthday greeting combined with a Christmas wish for my nieces Christmas Birthday. Perfect! These colours really pop on this Matte finish. The cute funny monkey expressions add humour to a birthday card surprise.
5 out of 5 stars rating
By AnonymousOctober 1, 2025 • Verified Purchase
Folded Greeting Card, Size: Big, 8.5" x 11", Paper: Signature Matte, Envelopes: White
I absolutely love this!! Thank you so much for creating a very special birthday card for my mom for her very special day!
5 out of 5 stars rating
By Lisa B.August 21, 2023 • Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
We ordered this for my mother in law’s 90th birthday. We used pictures from throughout the years. She loved the card and surely will bring tears and smiles whenever she looks at it. Printing was very clear

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Folded Greeting Cards
labkittynerdnerdzsmarthumourfunnyspectrumfftfrequencyelectrical
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labkittynerdnerdzsmarthumourfunnyspectrumfftfrequencyelectrical

Other Info

Product ID: 137414793516173489
Designed on 2010-03-21, 3:42 PM
Rating: G