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SmartSign >
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> Custom Metal Signs
> K-3421-ALL

Customizable Diamond Sign Template: Custom Diamond Sign Template- Add Own Special Wording (K-3421-ALL) Learn More...

Customizable Diamond Shaped Sign

Customizable Diamond Shaped Sign

Custom Metal Signs

Customizable Diamond Shaped Sign Template

Ships Monday.

Order within 00 hrs 00 mins

Part#

K-3421-ALL

SPN#

1G55

Shape

Diamond

Free PDF

Product Description

Diamond shaped signs usually signify warnings. Add any warning or safety message with our user-friendly customization tool. You can even change the color and font.

Pre-punched holes for quick installation.
Available in aluminum, engineer grade, high intensity grade, and diamond grade reflective aluminum.

Read more

0 Select Size:

12" Diamond

18" Diamond

24" Diamond

30" Diamond

36" Diamond

0 Select Material:

Quantity / Price (Per Sign)

12" x 12"

1
Reflective Aluminum Signs
3M Engineer Grade Reflective Alum.

$33.86
3M Hi Intensity Reflective Aluminum

$38.75
Rigid Signs
Aluminum

$35.45

View all quantity based discounts

Price List

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3M Engineer Grade Reflective Alum.

Configuration:

(click to zoom)

Die d12

Die d12

Die d12

7+ year life expectancy

This is one of our good selling products.

Great water and chemical resistance

168ºF

Mounts with screws or clips.

Jun 14

(Hover for more details)

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2:41
63 mil thick aluminum.
3M Engineer Grade reflective.
Laminated for superior durability.
Rounded corners and pre-punched holes for mounting.

More Material Details

10+ year life expectancy

This is one of our better selling products.

Great water and chemical resistance

168ºF

Mounts with screws or clips.

Jun 14

(Hover for more details)

2:41
63 mil thick aluminum with 3M High-Intensity Grade film.
3x as reflective as Engineer Grade.
10+ year durability backed by a 3M warranty.
Rounded corners - for easy handling and a professional appearance.
Signs have prepunched holes to insure a hassle-free installation.

More Material Details

7+ year life expectancy

Great water and chemical resistance

168ºF

Mounts with screws or clips.

Jun 14

(Hover for more details)

2:16
63 mil thick aluminum.
Printed with 3M inks and materials.
For use indoors or outdoors.
Rounded corners.
Includes large holes for easy mounting.

More Material Details

0 Order Quantity:

Buy quantity and save

Buy 2+
18% OFF
$27.86/Sign
Buy 3+
24% OFF
$25.86/Sign
Buy 4+
27% OFF
$24.86/Sign
Buy 5+
29% OFF
$24.06/Sign

Buy 2+
15% OFF
$32.75/Sign
Buy 3+
21% OFF
$30.75/Sign
Buy 4+
23% OFF
$29.75/Sign
Buy 5+
28% OFF
$27.95/Sign

Buy 2+
17% OFF
$29.45/Sign
Buy 3+
23% OFF
$27.45/Sign
Buy 4+
25% OFF
$26.45/Sign
Buy 5+
32% OFF
$23.95/Sign

Size: 12" x 12"

Material: 3M Engineer Grade Reflective Alum.

Package

1 Sign/Sign

You Save $0.00

$33.86 ($33.86 / Sign )

Free Delivery Over $29.95
Guaranteed Best Pricing
3-Year Warranty

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(800) 952-1457 Mon - Fri 8:00am to 7:00pm EST

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Google Customer Reviews

5,470 reviews

Reseller Ratings

Reseller Ratings

6,572 reviews

Customer Reviews

5.0

Based on 76 ratings

5 Star 75
3 Star 1
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Suzanne Jun 03, 2025

Size: 18" x 18" Material Type: Engineer Grade Reflective Aluminum Sign, 80 mil Verified Purchase

Moose crossing sign

Exactly what I ordered. I am a repeat buyer. I will continue to purchase from campgroundsigns.com

David Jun 30, 2023

Size: 18" x 18" Material Type: Engineer Grade Reflective Aluminum Sign, 80 mil Verified Purchase

Very satisfied with my custom signs and the customer service.

The sign is super high quality for one thing. Secondly, I chose a custom sign and the art department and I had to go through several corrections before we reached the design I was looking for. Whether through emails or phone calls, all representatives were incredibly patient and helpful. I would absolutely order signs again from SmartSign.

Todd Jun 09, 2023

Size: 12" x 12" Material Type: Engineer Grade Reflective Aluminum Sign Verified Purchase

Very Happy With Product

Signs look great, and arrived quickly, just what I've come to expect from this excellent company.

Melanie May 20, 2023

Size: 12" x 12" Material Type: Engineer Grade Reflective Aluminum Sign Verified Purchase

Going to buy another sign soon...A+++

arrived quickly and just what we were wanting

Thomas Feb 21, 2023

Size: 12" x 12" Material Type: Heavy-Duty Aluminum Sign, 63 mil Verified Purchase

Perfect sign at perfect price

Well made sign at a great price!

See all reviews

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