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4x8 Sign Details & Installation

Post kit for large signs

10 mm - Approx. ½"" thick rigid signboard. The signboard is a heavy gauge engineered corrugated plastic, with a two year outdoor life. It is a good replacement for plywood and is opaque.


4 mm- Approx. ¼"" thick signboard, commonly called corrugated plastic. This material has a one year outdoor life.

4x8 sign material

The 4x8 sign is scored and folded to ship via FedEx in a 2‘x4‘ box. The scoring method maintains the unity and rigidity of the sign by creating a unique hinge that is remarkably durable.


Simply take the 4x8 sign out of the box and return it to the original position. The 4x8 sign can then be installed in either one of our PVC Post Kits, your own post kit, or mounted to an existing structure.

4x8 sign with post kit

4x8 Sign Installation Options (10 mm only)

PVC Standard Post Kit

commercial sign installation

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Self Standing

commercial sign installation

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Arrow Post Kit

commercial sign installation

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Why Real Estate Companies Choose 1-800-The-Sign

Nationwide shipping

Ship Same Day*

We ship from multiple U.S. production locations to reach customers faster, with FedEx delivering to most locations in 1–3 business days. Express shipping is available.

Free design services

FREE Design Support

Free Professional Design Help. Design your sign online using our easy, EZ design tool, or let our experienced designers create it for you. No design fees. No hassle. Just production-ready files.

Quick turnaround, fast delivery

Fast Turnaround

Fast Turnaround, Nationwide. From proof approval to production, we move fast. Our streamlined process and multiple U.S. facilities ensure quick turnaround without sacrificing quality.

Easy installation

Easy Instllation

Easy to Install Post Kits. Our industry-standard post kits are designed for quick, tool-friendly installation. Lightweight, collapsible, and easy to transport—fits in most car trunks.

Real customer support

Customer Support

Real Customer Support. Place orders online, by phone, or by email. Our knowledgeable support team responds in minutes, not days, to keep your project moving.

Trusted since 1980

Trusted Since 1980

With three generations of sign makers, we have been helping commercial Realtors, auctioneers, and builders succeed for over 40 years. Proven products. Proven reliability.

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*Orders approved by 3:00 PM EST typically ship the same business day. Orders approved after 3:00 PM EST ship the following business day. Applies to standard quantities. Large or complex orders may require additional production time. *Some products ship exclusively from our Florida facility, which may increase transit time.