Sign Substrates, Coroplast & PVC

Sign Substrates, Blanks and Sheet Materials

Sign Substrates and Materials Available

Browse our substrate categories below:

• Aluminum sign blanks for durable indoor and outdoor signs

• Bandanna Banner material for quickly producing hemmed and grommeted banners

• Coroplast corrugated plastic for yard signs, temporary signs and displays

• Poly-coated paper for weather-resistant printed signs

• Rigid PVC sheets for signs, displays and fabricated projects

• Magnetic sheeting for removable vehicle signs and magnetic graphics

Select a category below to view its available products and sizes.

Local Pickup and Delivery for Full Sheets

Four-foot-by-eight-foot sheets and other oversized materials cannot be shipped through the regular online checkout. These products are available for local pickup or delivery in qualifying areas.

Call Great Lakes Graphic Supply at 1-800-477-6275 for current availability, pricing and delivery information before ordering full sheets.

Aluminum Sign Blanks and Sheets

Aluminum provides a durable, professional surface for indoor and outdoor signs. These blanks can be used with cut vinyl lettering, compatible digital printing, UV printing, screen printing and other sign-production methods.

Listed aluminum sizes include:

• 6 inches by 24 inches

• 10 inches by 14 inches

• 12 inches by 18 inches

• 16 inches by 24 inches

• 18 inches by 24 inches

• 24 inches by 30 inches

• 4-foot-by-8-foot sheets and larger

Use the product dropdowns to view listed color and thickness options. Full sheets and oversized aluminum are available for local pickup or delivery only. Call 1-800-477-6275 to order.

Bandanna Banner Material on a Roll

Bandanna Banner is a banner-on-a-roll system designed to make banner production faster and easier. The material has accurately measured one-inch hems and thermo-welded seams along the top and bottom edges.

Its lay-flat construction makes applying vinyl graphics easier. The double-grommet spacing allows the material to be cut in two-foot increments while leaving a grommet at the end of one banner and the beginning of the next.

Listed roll sizes include:

• 22 inches by 72 feet

• 34 inches by 72 feet

• 46 inches by 72 feet

Review the product listings below for current availability.

Coroplast Corrugated Plastic Sheets

Coroplast is a lightweight corrugated plastic commonly used for yard signs, real estate signs, event signs, political signs, temporary outdoor signage and indoor displays.

The material is moisture, chemical and stain resistant. Stock sheets are treated on both sides to help compatible inks and adhesives bond properly.

Available formats may include:

• 24-inch-wide by 18-inch-high sheets in packs of 25

• 4-foot-by-8-foot full sheets in available colors and thicknesses

Full sheets are available for local pickup or delivery only. Call 1-800-477-6275 for current full-sheet inventory and pricing.

Weather-Resistant Poly-Coated Paper

Our C1S poly-coated paper provides a durable, weather-resistant surface for compatible screen printing and sign-production applications. The material resists wrinkling and is recyclable.

Listed product specifications:

• .024-inch, 24-point material

• Coated on one side

• 28-inch by 22-inch sheets

• Packaged in boxes of 50

• Suitable for compatible screen-printing applications

Review the product listing below for current availability.

Rigid PVC Sign Sheets

Rigid PVC is a lightweight sign and display material with a durable matte surface. It can be used for compatible screen printing, painting, laminating, vinyl lettering and fabricated display projects.

PVC can be cut, sawed, drilled, bent and fabricated using appropriate plastic-working tools and fasteners.

Four-foot-by-eight-foot PVC sheets are available for local pickup or delivery only. Call 1-800-477-6275 for available colors, thicknesses and current pricing.

White Magnetic Sign Sheeting

Flexible magnetic sheeting provides a removable surface for vehicle signs, identification graphics, promotional signs and other magnetic applications. The matte white face can be decorated with compatible vinyl graphics or printing methods.

Product specifications:

• 30-mil flexible magnetic material

• Matte white finish

• Multi-pole magnetization for strong holding power

• 24-inch by 25-foot rolls

• 24-inch by 50-foot rolls

For vehicle applications, apply magnetic material only to a clean, smooth and magnet-compatible metal surface. Remove and clean both the magnetic material and vehicle surface regularly.

Need Help Selecting a Sign Substrate?

Choosing the correct substrate depends on the application, expected service life, installation location, printing or lettering method and required size.

Call Great Lakes Graphic Supply at 1-800-477-6275 for product availability, quantity pricing or help selecting material for your next sign project. We have supplied sign-making materials to the professional sign trade since 1987.

Frequently Asked Questions About Sign Substrates

Which sign substrate is best for outdoor signs?

Aluminum is commonly selected for durable outdoor signs because it does not rust and provides a smooth professional surface. Coroplast is often used for temporary outdoor signs, while rigid PVC may be suitable for certain sheltered or shorter-term applications. The correct choice depends on sign size, mounting method, wind exposure and expected lifespan.

What is Coroplast used for?

Coroplast is a lightweight corrugated-plastic substrate commonly used for yard signs, campaign signs, directional signs, temporary advertising and indoor displays. Its fluted construction allows compatible wire stakes to be inserted into the material for ground-mounted signs.

What is the difference between .040 and .063 aluminum?

A .063-inch aluminum blank is thicker and more rigid than a .040-inch blank. The lighter .040 material is commonly used for general signs, while .063 aluminum may be preferred when additional rigidity and durability are needed. Sign size, mounting and wind exposure should be considered.

Can sign vinyl be applied directly to aluminum, Coroplast or PVC?

Yes. Cut vinyl and compatible printable media can be applied to clean, smooth aluminum, Coroplast and rigid PVC surfaces. Remove dust, grease, manufacturing residue and other contamination before application. Adhesion should be tested when the surface or coating is uncertain.

Will magnetic sheeting stick to every vehicle?

No. Magnetic sheeting requires a clean, flat ferrous-steel surface. It will not hold to aluminum, fiberglass, plastic or body panels containing substantial filler. Test the actual vehicle surface before producing the sign and follow the material manufacturer’s care instructions.

What is Bandanna Banner material?

Bandanna Banner is banner material supplied on a roll with finished hems, thermo-welded seams and regularly spaced grommets. It is designed to simplify banner production and can be cut in two-foot increments while retaining grommets near the ends of each banner.

Can four-foot-by-eight-foot substrate sheets be shipped?

Full four-foot-by-eight-foot sheets and other oversized substrates cannot be shipped through the regular online checkout. They are available for pickup at Great Lakes Graphic Supply in Youngstown, Ohio, or delivery in qualifying areas. Call 1-800-477-6275 before ordering.

Are additional substrate sizes and thicknesses available?

Yes. The website does not list every available size, color or thickness. Availability changes by material, and some products may require local pickup or delivery. Call 1-800-477-6275 to check current inventory and quantity pricing.