Welcome to Seattle's Custom Coroplast yard sign Super Site - Here's how we're different

We offer any size up to 60" x 120" (for 4mm coro) || We have 2mm, 4mm, 6mm, 8mm & 10mm coroplast available for some or all orders || We sell full size h-frames for $0.65 with your sign order || We offer no markup freigtht || We can contour or shape cut on 48x96 or 60x120 sheets, just add $25 or 5%, whichever is larger. || Multiple art files are not a problem || We offer any quantity, not just those shown on our site || We have plastic step stakes (spider stakes) for just $0.85 ea. || You may combine sizes to get quantity price-breaks || With our 60x120" 4mm coro sheets you may squeeze and inch off your signs here and there and save big || You can save even more if flute direction does not matter || We can fold large signs to save on shipping || We can print right to the edge, so you need less coroplast || If you have any other crazy ideas, just ask ||

We are experts in coroplast printing using state of the art equipment and high volume to deliver the best quality coroplast printing at the lowest prices. Our inks are waterproof and fade resistant so our signs work indoor or outdoor.

Coroplast is a fluted polypropylene sheet that looks like corrugated cardboard boxes from the side. Coroplast is lightweight and inexpensive due to its hollow fluted structure. Coroplast is also non-toxic, waterproof, and, importantly, printable. Because of Coroplast's durability and weather resistant properties it is widely used for outdoor advertising, billboards, and signage.

Coroplast stock sheets are electrostatically double treated by "Corona Discharge" on both sides to allow specifically formulated inks and adhesives to adhere. The most commonly used Coroplast in the print industry is 4mm thick. H-frames are used to plant coroplast signs into the ground. Two ends go into flutes of the sign and the other two go into the ground. Unlike others, we print full sheets that are 48"x96" or 60"x120", giving us greater flexibility on pricing for sizes evenly dividble into 48x96 (e.g., 16x24) and 60x120 (e.g., 20x30). Printing on 48"x96" sheets has been around for years. This master sheet size has defined the most common yard sizes as 16"x24" and 18"x24" (height x width).

Regular coroplast has one ridge per flute visible on its surface; it is most common to use vertical flutes since the h-frames will work to plant into the ground. This surface pattern has largely been accepted by the public since the signage is in such wide use. However, we do also print a smooth surface 4mm coroplast. This smoother surface allows for better print quality when printing in high resolution. And, of course, we are able to print in high resolution. We use flatbed printers with six ink colors (C M Y K lightM and lightC) and so our output is 720x720 dpi.

Perhaps you would like a sturdier form of coroplast, we also print on 6mm, 8mm and 10mm coroplast. And they all have their respective h-frames.

We can also shape cut, contour cut or die cut any of them, printed 1 side or 2.

Get Huge!

Our 60"x120" signs are useful is with our really big signs. These are most often used for election signage by highways.

There are many other ways we will save you money on your full color coroplast sign orders, here's a few:

-We sell full size h-frames for $0.65 with your sign order
-We have plastic step stakes (spider stakes) for just $0.85 ea
-Multiple art files are not a problem
-We can fold large signs to save on shipping
-We offer no markup freigtht
-You may combine sizes to get quantity price-breaks

Here's a few more points that make us unique

-We have 2mm, 4mm, 6mm, 8mm & 10mm coroplast available for some or all orders
-We can contour or shape cut on 48x96 or 60x120 sheets, just add $25 or 5%, whichever is larger
-We offer any quantity or size, not just those shown on our site

If we missed anything or have any other crazy ideas, just ask us at 216.227.8521 or email us at

FullColorPrintings@gmail.com