Rectangle & Square Metal Signs

Rectangle or square, indoor or outdoor — every sign printed on heavy-gauge aluminum and made to stay.

Discover more: Lore & Cryptid Metal Signs Customizable Metal Signs Bigfoot & Hominid Signs Farm Animal Signs Funny Dog Signs for Every Breed Fish & Aquarium Signs

Showing 217 - 240 of 1017 products

Fiddler Crab warning sign, red WARNING oval, this property is protected by a highly trained Fiddler Crab, with fiddler crab silhouette

Fiddler Crab warning metal sign, fiddler crab silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Funny Fiddler Crab Warning Sign

From $14.95

a warning sign that says "WARNING This property is protected by a highly trained POM POM CRAB", and it is not responsible for injury or possible death.

a warning sign that says "WARNING This property is protected by a highly trained POM POM CRAB. Not responsible for injury or possible death."

Highly Trained Pom Pom Crab Warning Sign

From $14.95

The image is a warning sign that states "This property is protected by a highly trained Millipede".

a warning sign that says "This property is protected by a highly trained Millipede".

Highly Trained Millipede Sign

From $14.95

A rectangular novelty sign with rounded corners featuring a cartoon axolotl and warning-style text. The sign reads “DO NOT TAP THE GLASS,” “THE AXOLOTL,” and “SMALL BODY.

a large axolotl, a type of salamander, with a warning label that says "DO NOT TAP THE GLASS" and "THE Axolotl SMALL BODY IMMORTAL ENERGY".

Funny Axolotl Warning Sign

From $9.95

Barracuda warning sign, red WARNING oval, this property is protected by a highly trained Barracuda, with barracuda silhouette

Barracuda warning metal sign, barracuda silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Barracuda Metal Warning Sign

From $14.95

Seahorse warning sign, red WARNING oval, this property is protected by a highly trained Seahorse, with seahorse silhouette

Seahorse warning metal sign, seahorse silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Funny Seahorse Warning Metal Sign

From $14.95

Sea Turtle warning sign, red WARNING oval, this property is protected by a highly trained Sea Turtle, with sea turtle silhouette

Sea Turtle warning metal sign, sea turtle silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Sea Turtle Coastal Metal Sign

From $14.95

Mandarin Fish warning sign, red WARNING oval, this property is protected by a highly trained Mandarin Fish, with mandarin fish silhouette

Mandarin Fish warning metal sign, mandarin fish silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Mandarin Fish Security Metal Sign

From $14.95

Kuhli Loach warning sign, red WARNING oval, this property is protected by a highly trained Kuhli Loach, with kuhli loach silhouette

Kuhli Loach warning metal sign, kuhli loach silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Funny Kuhli Loach Warning Sign

From $14.95

Amano Shrimp warning sign, red WARNING oval, this property is protected by a highly trained Amano Shrimp, with amano shrimp silhouette

Amano Shrimp warning metal sign, amano shrimp silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Amano Shrimp Aquarium Guard Sign

From $14.95

Pistol Shrimp warning sign, red WARNING oval, this property is protected by a highly trained Pistol Shrimp, with pistol shrimp silhouette

Pistol Shrimp warning metal sign, pistol shrimp silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Pistol Shrimp Aquarium Metal Sign

From $14.95

Electric Blue Crayfish warning sign, red WARNING oval, this property is protected by a highly trained Electric Blue Crayfish, with electric blue crayfish silhouette

Electric Blue Crayfish warning metal sign, electric blue crayfish silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Electric Blue Crayfish Metal Sign

From $14.95

Goby Fish warning sign, red WARNING oval, this property is protected by a highly trained Goby Fish, with goby fish silhouette

Goby Fish warning metal sign, goby fish silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Goby Fish Aquarium Metal Sign

From $14.95

Otocinclus Catfish warning metal sign, otocinclus catfish silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Otocinclus Catfish Warning Sign

From $14.95

Manatee warning sign, red WARNING oval, this property is protected by a highly trained Manatee, with manatee silhouette

Manatee warning metal sign, manatee silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Highly Trained Manatee Metal Sign

From $14.95

Bamboo Shrimp warning sign, red WARNING oval, this property is protected by a highly trained Bamboo Shrimp, with bamboo shrimp silhouette

Bamboo Shrimp warning metal sign, bamboo shrimp silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Bamboo Shrimp Aquarium Guard Sign

From $14.95

Sea Anemone warning sign, red WARNING oval, this property is protected by a highly trained Sea Anemone, with sea anemone silhouette

Sea Anemone warning metal sign, sea anemone silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Sea Anemone Aquarium Metal Sign

From $14.95

Sea Lion warning sign, red WARNING oval, this property is protected by a highly trained Sea Lion, with sea lion silhouette

Sea Lion warning metal sign, sea lion silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Sea Lion Metal Warning Metal Sign

From $14.95

Sea Urchin warning metal sign, sea urchin silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Sea Urchin Warning Sign

From $14.95

Nerite Snail warning sign, red WARNING oval, this property is protected by a highly trained Nerite Snail, with nerite snail silhouette

Nerite Snail warning metal sign, nerite snail silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Nerite Snail Aquarium Metal Sign

From $14.95

Damselfish warning sign, red WARNING oval, this property is protected by a highly trained Damselfish, with damselfish silhouette

Damselfish Warning Metal Sign

From $14.95

Giant Isopod warning sign, red WARNING oval, this property is protected by a highly trained Giant Isopod, with giant isopod silhouette

Giant Isopod warning metal sign, giant isopod silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Giant Isopod Deep Sea Metal Sign

From $14.95

Mantis Shrimp warning sign, red WARNING oval, this property is protected by a highly trained Mantis Shrimp, with mantis shrimp silhouette

Mantis Shrimp warning metal sign, mantis shrimp silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

Mantis Shrimp Aquarium Metal Sign

From $14.95

Lobsta warning sign, red WARNING oval, this property is protected by a highly trained Lobsta, with lobster silhouette

Lobsta warning metal sign, lobster silhouette beside bold red WARNING lettering, 'not responsible for injury or possible death'

New England Lobsta Metal Sign

From $14.95

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The classic format. The reliable workhorse of the wall.

Rectangle and square metal signs cover the widest range of spaces — walls, fences, gates, shelves, mantels, and that one weird corner above the doorway that nothing else fits.

Rectangles arrive pre-drilled with mounting holes in 9×12, 12×18, and 16×24 inch sizes — hang them on walls, fences, or gates straight out of the mailer. Squares come in 6×6, 8×8, and 12×12 inch sizes without holes, ideal for shelves, mantels, and leaning displays.

Animal lovers will find personalized metal signs featuring dogs, cats, birds, wildlife, farm animals, fish, reptiles, and aquatic creatures — breed-specific and species-specific, so your sign reflects your actual animal, not a generic silhouette.

Cryptid enthusiasts can claim their territory with outdoor metal signs warning visitors about Mothman, Bigfoot, the Loveland Frogman, Rougarou, Squonk, and the full roster of American folklore’s finest.

Every sign is printed on heavy-gauge, rust-proof aluminum in our Henniker, New Hampshire studio — UV-resistant ink applied directly to the metal, no decals, no vinyl, nothing to peel. Each sign ships flat in a rigid fiberboard mailer. Made in the USA, every design exclusive to Designs by Linda Nee.

Browse below, pick your shape, pick your size, and find the sign that belongs on your wall. Free shipping on orders over $50.

Questions About Our Rectangle & Square Metal Signs

What is the difference between rectangle and square signs? Rectangle signs come in 9x12, 12x18, and 16x24 inches with pre-drilled mounting holes for walls, fences, and gates. Square signs come in 6x6, 8x8, and 12x12 inches without holes, making them ideal for shelves, mantels, and leaning displays. Both formats are printed on the same heavy-gauge rust-proof aluminum.

Do the rectangle signs come ready to hang? Yes. Every rectangle sign comes with two pre-drilled mounting holes for quick installation. Hardware is not included. Square signs do not have holes and are designed for shelf or surface display.

Are these signs made in the USA? Yes. Every sign is designed and printed in our Henniker, New Hampshire studio. All designs are original and exclusive to Designs by Linda Nee and will not be found on any other storefront.

Do these make good gifts? These are popular gifts for animal lovers, cryptid enthusiasts, gardeners, and anyone whose walls have a personality. They work well as birthday gifts, housewarming gifts, and holiday presents. All orders qualify for free shipping on orders over $50.