--- type: product title: "Plastic Coroplast Signs" description: "Corrugated plastic signs on 4mm white coroplast, 12 by 18, 12 by 24, 18 by 24 or custom, printed one or both sides, grommets or an H-stake, $25 a sign up." resource: https://www.4over4.com/product/plastic-coroplast-signs tags: ["Coroplast Signs Printing", "product"] generated: by: "process:4over4-mapp-build" at: 2026-10-30T18:31:47.196Z timestamp: 2026-10-30T18:31:47.196Z sources: - resource: https://www.4over4.com/product/plastic-coroplast-signs title: "Plastic Coroplast Signs" status: stable --- # Plastic Coroplast Signs Corrugated plastic signs on 4mm white coroplast, 12 by 18, 12 by 24, 18 by 24 or custom, printed one or both sides, grommets or an H-stake, $25 a sign up. ## Price and options - Starting price: From $25.00 - Rating: 4.7 from 12 reviews - Sizes (3): 12" x 18", 12" x 24", 18" x 24" - Paper types (1): 4mm White Coroplast - Configurator options: Ink Color (2), Grommets (3), H-Stake (2), Proof Options (2) Shipping Oversized Rigid Products: Maximum Size that can be shipped with UPS without additional handling fees is 38" x 46". The UPS price in the Instant Price Calculator will only hold for projects up to that size. No exceptions. If your project is larger, you will need to switch to customer pickup, messenger, or we will need to custom price the shipping to reflect the oversized package surcharges imposed by UPS on a project by project basis. ## See Plastic Coroplast Signs in action 4mm white Coroplast in 12 x 18, 12 x 24 and 18 x 24 inches or any size, printed on one or both sides, with optional grommets or an H-stake. Plastic Coroplast Signs: Key Facts - From $25 for a single 12" x 18" sign, with quantities from 1 to 100 set in the live configurator. - 4mm white Coroplast, a corrugated plastic panel built to hold up outdoors through sun, rain, and sprinklers. - 3 fixed sizes, 12" x 18", 12" x 24", and 18" x 24", plus an Any Size custom option. - Full color on the front with a blank back, or full color on both sides, with grommets and an H-stake available. - 5 business day standard turnaround, with 2-day and 3-day rush, rated 4.7 out of 5 across 12 reviews. ## Signs That Beat the Weather, Not the Budget Custom corrugated signs, also called plastic corrugated signs or Coroplast signs, print full color on 4mm white corrugated plastic in 12" x 18", 12" x 24" or 18" x 24", or any custom size. Order 1 to 100, add grommets or an H-stake, and they print on a 5 business day standard turnaround. Corrugated plastic signs get staked into a front lawn, zip-tied to a job-site fence, or set out to point the way at an event. Coroplast is simply the trade name for the corrugated plastic board they print on. It prints full color on a bright white surface, stands up on its own, and because it is plastic rather than paper or cardboard, it can go out in Monday's rain and still look sharp the next weekend. A single 12" x 18" starts at $25, and the line holds a 4.7 out of 5 rating across 12 reviews. A 4mm panel is light enough to carry a stack under one arm, rigid enough to hold flat on a fence, and cheap enough to hand out across a whole neighborhood. To compare this sign with the rest of the family, browse the full [coroplast signs](https://www.4over4.com/rigid-signs-printing) range, or build yours from the choices below. The price starts at $25 for one 12" x 18" sign, and the configurator takes you from a single sign up to a run of 100. A bigger size, two-sided printing, or add-ons like grommets and an H-stake move the number, and the total shows each change before checkout. ### What Is a Plastic Coroplast Sign A plastic Coroplast sign is an outdoor sign printed on corrugated plastic, a lightweight fluted panel. At 4OVER4 these print on 4mm white Coroplast in three fixed sizes from 12" x 18" to 18" x 24" plus an Any Size custom option, full color on one side or both, starting at $25 for a single sign. For the Any Size option, our guide to [custom printing sizes](https://www.4over4.com/guide/custom-size-printing-the-complete-guide) explains how to set your own dimensions. Coroplast is the same material behind campaign signs, garage sale arrows, and directional signage at events. You upload your artwork, choose the size, set one-sided or two-sided printing, and the sign prints in full color on a bright white face. For event wayfinding, our guide to [event directional signs that get every guest to the right room](https://www.4over4.com/guide/directional-signs-for-events-the-complete-guide) covers placement and wording. If you want the plain version of this same sign, the [Coroplast](https://www.4over4.com/product/coroplast) cover it, and this listing sits right beside it in the lineup. ### What Is 4mm Coroplast and How Well Does It Hold Up Outside 4OVER4 prints these signs on 4mm white Coroplast, a corrugated polypropylene panel with hollow flutes running through the core. The plastic is waterproof and does not soak up moisture, so the sign survives rain, sprinklers, and weeks of direct sun without warping the way paper board would. For job site signage built on the same idea, see our [construction signs](https://www.4over4.com/product/construction-signs). Look at the edge of a Coroplast sheet and you see the flutes, the little air channels that run the length of the panel like the ribs in cardboard, only in solid plastic. That structure is what makes 4mm Coroplast both light and rigid. It will not sag on a fence, it will not curl when it gets wet, and it wipes clean with a damp cloth. The 4mm gauge is the standard weight for yard and lawn signs, thick enough to take an H-stake through the flutes and thin enough to keep the per-sign cost low. Store it flat when the season ends and the same sign comes back out next year. ### How long do corrugated plastic signs last outdoors Outdoors, the limit is sunlight rather than water. Rain, sprinklers and snow run off 4mm corrugated plastic without softening it, so the panel outlives the ink on it. Direct sun fades color first, and fading arrives sooner on a south facing sign. Run the flutes vertically so wind passes along the channels instead of folding the sign. That is why a real estate sign, a job site sign or an election sign is still legible at the end of a season, while the same artwork on cardboard is pulp after the first heavy weekend. ### What Sizes Do Plastic Coroplast Signs Come In 4OVER4 plastic Coroplast signs come in three fixed sizes, 12" x 18", 12" x 24", and 18" x 24". If none of those fit, the Any Size option lets you set custom dimensions in the configurator. The default and lowest-priced size is the 12" x 18". The 12" x 18" is the classic lawn sign, the right size for a name, a phone number, and an arrow a driver can read from the curb. Step up to the 12" x 24" when you want a wider band for a longer message, and reach for the 18" x 24" when the sign needs to carry from across a parking lot or hold a full real estate rider layout. When a job calls for something off the standard grid, the Any Size option opens custom dimensions so the sign matches the frame or stake you already have. The specs panel below lists every size and option. ### Plastic Coroplast Signs , Configured Your Way 4 option groups, 9 choices, defaults: 4/0: 4 Color Front; Blank Back - 4 groups: 9 total ### Corrugated Plastic Sign Specs at a Glance - Material: 4mm white Coroplast, a corrugated polypropylene panel - Sizes: 12" x 18", 12" x 24", 18" x 24", or Any Size custom - Printing: Full color front with a blank back, or full color on both sides - Mounting: Grommets in the top corners or all 4 corners, and an optional H-stake - Quantity: 1 to 100 signs per order - Price: From $25 for one 12" x 18" sign - Artwork: Print-ready PDF, JPG or PNG - Proofing: Free Online Proof option before print - Turnaround: 5 business days standard ### Can You Add Grommets or a Stake for Hanging and Mounting Yes. 4OVER4 offers grommets in two placements, top corners only or all four corners, plus an optional H-stake. Grommets let you zip-tie or hang the sign on a fence or post, and the H-stake pushes into the flutes so the sign stands on its own in a lawn or median. How you mount the sign decides which add-ons you want. Grommets are the reinforced metal rings punched through the corners, and they turn a flat panel into something you can lash to a chain-link fence, hang from a banner frame, or bungee to a railing. Choose top corners only for a sign that hangs down, or all four corners when you want it pulled tight and flat against a surface. The H-stake is the wire ground spike shaped like an H that slides straight into the vertical flutes, so a 12" x 18" becomes a freestanding yard sign in seconds with no tools. Order the sign bare if you already have hardware, or add grommets and a stake and it arrives ready to put up. ### Single sided or double sided corrugated plastic signs The Ink option decides this at checkout. Choose 4/0: 4 Color Front; Blank Back for a sign that is only ever read from one direction, or 4 Color Both SIdes when people approach from two. #### When single sided is enough A sign flat against a wall, taped inside a shop window, or wired to a fence that people only pass on one side has a back nobody will ever see. Print the front and put the saving into a second sign somewhere else. #### When double sided pays for itself On a two way street, a single sided sign is invisible to half the traffic, so one double sided sign replaces the two signs you would otherwise stake back to back. The same goes for a lawn on a corner, an open house arrow read coming and going, and any sign hung perpendicular to a walkway. Double sided also lets you run two messages, for example the offer facing the road and the arrow facing the parking entrance, on one panel. ### How Much Do Plastic Coroplast Signs Cost Plastic Coroplast signs start at $25 for a single 12" x 18" sign at 4OVER4. You can order any quantity from 1 to 100 in the configurator. A larger size, two-sided printing, or add-ons like grommets and an H-stake adjust the total, and the tool shows the exact price before you check out. The entry price is $25 for one 12" x 18" sign, and what moves the number from there is what you ask the sign to do: a bigger 18" x 24" panel costs more than the 12" x 18", printing full color on both sides adds to a single-sided job, and grommets or an H-stake add their own line. Each of those choices changes the price before you order. Not ready to send files straight to press? Choose the Free Online Proof option and you approve a digital proof of your exact sign before it prints. ### How Do These Compare to the Other Coroplast Signs Standard printed Coroplast costs the least of the three. If your job needs a wipe-clean surface you can update by hand, the [Dry Erase Coroplast](https://www.4over4.com/product/dry-erase-coroplast) takes a marker, and when the sign has to be seen at night, the [Reflective Coroplast](https://www.4over4.com/product/reflective-coroplast) bounces headlights back. The chart below lines these up side by side so you can compare the starting price on each before you choose. ## Wally plants a sign that beats the weather Why a Coroplast sign outlasts the rain, the sprinklers, and the sun. A single 12 by 18 inch Coroplast sign costs $25 and prints on 4mm waterproof plastic, so it stays sharp through rain and weeks of sun. Add grommets to hang it on a fence, or an H-stake to plant it in a lawn. Pick a size, choose one side or two, and Wally prints it fast. ### The smart pick in coroplast signs Plastic Coroplast Signs beside Reflective Coroplast, Dry Erase Coroplast, out of 4 coroplast signs styles - Lowest entry price in the category, $25.00, [Coroplast](https://www.4over4.com/product/coroplast), and 1 more at this price, the cheapest way into the category - Most-reviewed style in the category, 66 reviews, Coroplast, the category's top-reviewed pick at 4.9★ | | Plastic Coroplast Signs | Reflective Coroplast | Dry Erase Coroplast | | --- | --- | --- | --- | | Min price | $25.00 | $29.00 | $31.99 | | Paper / stock | 4mm White Coroplast | 4mm White Coroplast | 4mm White Coroplast | | Finish | · | Reflective Film | Dry Erase Lamination | | Default qty | 1 | 1 | 1 | | Turnaround | 5 business days | 4 business days | 4 business days | | Rating | ★ 4.7 (12) | ★ 4.9 (61) | ★ 4.9 (61) | ### How Fast Can You Get Plastic Coroplast Signs 4OVER4 prints plastic Coroplast signs on a standard 5 business day turnaround, with 3-day and 2-day rush speeds available. The fastest option ships in 2 business days. You choose the speed in the configurator, and faster turnarounds adjust the price. Standard production keeps the price at its lowest at 5 business days. When the date is tight, the 3-day and 2-day rush speeds move the same job up the queue, with 2 business days the fastest you can go. You set the speed in one dropdown alongside the size and add-ons. Send print-ready art as a PDF, JPG, or PNG, and if you want a second set of eyes on the layout first, the Free Online Proof option puts a digital proof in front of you to approve before anything goes on press. ### See the Rest of Our Signs If a wipe-clean surface, a reflective face or a different size suits the job better, each sign lists its own starting price on its product page. Scan the full [print product range](https://www.4over4.com/products) for everything else we print. ### More From Coroplast Signs - Professional Quality 4 products in the Coroplast Signs - Professional Quality range, including Coroplast, Dry Erase Coroplast, Reflective Coroplast - [Coroplast From $25.00](https://www.4over4.com/product/coroplast) - [Dry Erase Coroplast From $31.99](https://www.4over4.com/product/dry-erase-coroplast) - [Reflective Coroplast From $29.00](https://www.4over4.com/product/reflective-coroplast) [Browse all of Coroplast Signs - Professional Quality](https://www.4over4.com/coroplast-signs-printing) ### Print Your Plastic Coroplast Signs Today At 4OVER4.COM, quality comes first, and it is backed by five guarantees and 25+ years of printing since 1999. Whatever size you pick, on one side or both, the 4mm board stands up outdoors and reads from the curb. Add grommets to hang one on a fence, or an H-stake to plant it in a lawn. Print your plastic Coroplast signs today. ## Plastic Coroplast Signs: Frequently Asked Questions ### What are Coroplast signs made of? They print on 4mm white Coroplast, a corrugated plastic panel with fluted channels running through the middle. It is light enough to carry a stack under one arm and rigid enough to stay flat against a fence, and being plastic rather than paper or cardboard it handles sun, rain, and sprinklers. ### What sizes do these signs come in? There are 3 fixed sizes, 12 inches by 18 inches, 12 inches by 24 inches, and 18 inches by 24 inches, plus an Any Size custom option. A single 12 inch by 18 inch sign starts at $25. ### Do the signs come with stakes for a lawn? An H-stake is an available add-on for planting a sign in grass or soft ground. If you are fastening the sign to a fence or a post instead, add grommets and use zip ties or wire through them. ### Can I print on both sides? Yes. You can print full color on the front with a blank back, or full color on both sides of the 4mm white Coroplast. Two-sided printing is worth it on a sign staked in a front lawn on a corner lot or beside a two-way road, where drivers see it from both directions. ### How many can I order? Quantities run from 1 to 100 in the live configurator, so you can order a single yard sign or a batch to cover a whole neighborhood or a full job site. The price per sign updates as you raise the count. ### How fast can I get them? Standard turnaround is 5 business days, with 2-day and 3-day rush production available. Choose the speed alongside your size and finishing options, and allow shipping time on top. Questions about Plastic Coroplast Signs? [See answers](https://www.4over4.com/help/coroplast)