A-Frame Sign Insert Sizes: What Fits a Standard Sandwich Board

Choosing the right insert size is essential when ordering an A-frame or sandwich board sign. The most common size for standard sandwich board frames is 24 x 36 inches. This size fits most sidewalk signs you see outside stores, schools, real estate offices, and event venues. However, not every frame uses the same dimensions, so it's important to measure before you order.

At Legit Fast Printing, we specialize in custom yard signs and printed signage. We recommend confirming your frame's insert area to ensure your new sign fits perfectly. Our team has seen many customers end up frustrated because they ordered based on the outside of the frame, not the actual graphic area inside. Take a few minutes to measure and avoid the hassle of returns or reprints.

What Size Insert Fits a Standard Sandwich Board?

Most standard sandwich boards and A-frame signs are designed for a 24 x 36 inch insert. This gives you plenty of space for clear, readable text and a strong visual impact. However, some frames use different insert sizes, including:

• 18 x 24 inches – Used for smaller frames or tight sidewalk spaces
• 22 x 28 inches – Common for certain plastic frames
• 16 x 24 inches – Less common, but available for slim designs

Always double-check the inside dimensions of your frame. Do not guess based on the exterior measurements, since the space for your custom A-frame sign insert will be slightly smaller.

Definition: What is an A-Frame Sign Insert?

An A-frame sign insert is a removable printed panel that slides or snaps into a sandwich board or sidewalk sign frame. These inserts display custom messages, directions, promotions, or event details. At Legit Fast Printing, our inserts are made from durable 4mm corrugated plastic (also called coroplast), ensuring your message is visible whatever the weather.

Step-by-Step: How to Make Sure Your Insert Fits

1. Open your sandwich board frame and remove any old insert if present.
2. Use a tape measure to check the width and height of the visible graphic area inside the frame, not the outside measurements.
3. Confirm the thickness your frame can accept. Most frames take 4mm (about 3/16 inches) thick inserts, like our rigid coroplast signs.
4. Note the mounting method (slide-in, Velcro, adhesive tabs) so you know how the insert attaches.
5. Order the correct size – match your exact measured opening. Our 24 x 36 inch insert is the best fit for most standard frames.

What Legit Fast Printing Offers

Our Custom 24x36" A Frame Insert for Sandwich Board Signs is designed specifically for standard sandwich board frames. These inserts are printed on premium 4mm rigid coroplast for weather resistance and lightweight strength. Each insert is custom printed with your design, making it ideal for business promotions, event signage, real estate, or wayfinding.

Best Practices: Designing and Placing Your A-Frame Insert

• Keep designs simple. Use big, bold fonts and high-contrast colors for easy reading from a distance.
• Limit text. Headlines should be short (five to seven words) with clear calls to action such as a phone number or event time.
• Double-check your artwork. Upload high-resolution files (no blurry graphics), and spell-check before ordering. Legit Fast Printing offers design help if you need assistance.
• Install in a visible spot. Place the A-frame near foot traffic, parking lots, or sidewalks where people will see your message clearly.
• Secure for weather. For windy areas, ensure the frame is weighted or placed in a sheltered spot.

Material Choice: Why Use Corrugated Plastic?

We use 4mm coroplast because it's lightweight, long-lasting, and easy to handle. Corrugated plastic is both weatherproof and UV-resistant, making it ideal for outdoor custom yard signs and A-frame inserts. Many businesses, schools, and event organizers prefer this option because it resists bending, cracking, and fading in sun or rain. The material is also fully recyclable, which is a bonus if you want to refresh your message seasonally.

How Many Inserts to Order

• Single event or short-term promotion: 1 insert may be enough.
• Multiple locations or a backup: Order 2 or more inserts to place in different spots or have a spare.
• Rotating messages: 3-4 inserts allow you to swap out signs for seasonal sales or different events.
• Frequent message changes: Order in packs so you’re always ready with a fresh sign.

If you need a larger batch or recurring signage, Legit Fast Printing offers volume packs to make it easier and more affordable for repeat campaigns.

Placements That Get Results

• Outside storefronts to attract customers walking or driving by
• At intersections and crosswalks for community events
• Next to real estate listings for open houses
• At school entrances for event directions
• At church, club, or community group gatherings
• Anywhere foot traffic or drivers need quick, clear information

A-frame signs are portable and can be used repeatedly, making them a practical investment for any organization or campaign.

FAQ: A-Frame Sign Insert Sizes and Ordering Advice

What is the most common insert size for sandwich board signs?

The standard size is 24 x 36 inches, but it's best to measure your frame's inside graphic area just to be sure.

Are all frames the same size?

No. While 24 x 36 inches is most common, some frames use 18 x 24 inches, 22 x 28 inches, or even 16 x 24 inches. Always measure first.

Do I get the frame with my insert?

No. At Legit Fast Printing, our A-frame inserts are designed for customers who already own a frame. We supply the printed insert, not the hardware.

What material is best for outdoor use?

We recommend 4mm corrugated plastic (coroplast), which holds up well outdoors and resists weather damage. This is the material used for our custom A-frame inserts.

Do you offer design help?

Yes, our team is happy to assist with artwork setup and design advice. Once you place your order, you can email us for support creating the best possible insert.

How do I install my insert?

Most frames either slide the insert in from the top or snap open at the sides. Check your frame for instructions and always secure the sign firmly in place.

What if I need help choosing the right size?

Contact us, and we'll guide you through measuring your frame and ordering the correct insert. Customer service is one of our top priorities. Read our customer reviews to see how we've helped others.

What’s the turnaround time?

Production and shipping times vary. For standard orders, expect fast turnaround because we know your promotion often can’t wait. See our guide to ordering signs fast if you have a tight deadline.

Summary and Next Steps

For most customers, a 24 x 36 inch A-frame sign insert is the right fit for standard sandwich board frames. Made from sturdy 4mm coroplast, these inserts stand up to the elements and help your message stand out. Before ordering, measure your frame’s inside opening carefully to avoid mistakes. Order as many inserts as you need based on the number of locations or how often you want to update your message.

Good preparation and clear design make all the difference – and if you need help, Legit Fast Printing is always here to provide advice, fast service, and high-quality printing. Ready to design your next custom yard sign, A-frame insert, or event display? Explore our custom A-frame sign insert options and let us help you make your message impossible to miss!